Atlantic cod
Fish · Last reviewed 2026-08-10
A large, heavily-built demersal predator of the North Atlantic, and the species whose commercial history is the standard example of stock collapse.
Safety
Barotrauma and pressure injury — Can cause injury needing treatment
A cod brought quickly from depth cannot vent the expanding gas in its swimbladder. It arrives bloated, sometimes with the stomach forced out of the mouth and the eyes protruding, and cannot swim back down if released — so it floats, and dies.
What reduces it: Retrieve more slowly from depth where possible, and use a weighted descending device to return the fish to depth if it is to be released. If a fish cannot be returned in a state where it can swim down, that is a reason to stop fishing that mark rather than to keep releasing fish that will not survive.
Boat safety — Can cause serious injury or death
Winter cod fishing means small boats in cold water and short daylight. An immersion in North Atlantic winter water is a survival problem measured in minutes, and it begins with cold water shock, not with hypothermia.
What reduces it: Lifejacket worn, not stowed. A means of calling for help that works when wet and cold. Tell somebody your plan and your return time. Check the forecast for the whole window, not for the departure, and accept that a marginal forecast in December is not marginal.
Precautions that always apply here
- Wear a buoyancy aid or lifejacket. Cold water incapacitates strong swimmers within a minute, long before swimming ability matters.
- Tell somebody where you are going and when you expect to be back.
- Carry a charged phone in a waterproof case, or another means of calling for help.
- Wet your hands before touching a fish. Dry hands strip the protective mucus layer that keeps infection out.
.jpg){kind=link}
Cod are big, blunt and unfussy: a heavy-bodied bottom predator with a large mouth, a single conspicuous chin barbel and an appetite that has made 'anything a cod will eat' a category rather than a joke. They take crabs, worms, fish, squid and — regularly enough to be documented — objects that are not food at all.
For anglers, cod are a cold-water winter species over most of the accessible European range, taken from shore in surf and over rough ground, and from boats over wrecks and reefs. The tackle is heavier than almost anything else in sea angling, not because cod fight especially hard but because the ground they live over eats terminal tackle.
Cod are also the species that carries the heaviest historical weight in fisheries science. The collapse of the Newfoundland stock is the textbook case of a fishery managed past its capacity to recover, and it is impossible to write about cod without that context — which is why FishingHQ's environmental records treat cod as the worked example of stock sustainability rather than as a footnote.
Identification
FishingHQ holds no photograph of this species whose identity and licensing it can vouch for, so it is not showing one. Misidentified fish photographs teach identification wrongly, and a picture with an unchecked caption would be worse than none. The identification points below are what to look at instead.
- Scientific name
- Gadus morhua
- Family
- Gadidae
- Water
- Saltwater
- Conservation status
- Vulnerable
- Regions
- Britain & Ireland, Northern Europe, Western Europe, North America, Arctic & Subarctic
- Three separate dorsal fins and two anal fins — the classic gadoid arrangement.
- A single prominent barbel on the chin.
- A pale, distinctly curved lateral line running above the pectoral fin.
- An upper jaw that projects beyond the lower.
- Colour ranges from red-brown over rough ground to greenish or sandy over open bottom, heavily mottled.
Size
- Typical
- 40–70 cm and 1–4 kg for most rod-caught fish in accessible European waters.
- Large
- Over 90 cm and 9 kg.
Exceptional: Historical fish well over 25 kg are recorded. Such sizes reflect an age structure that heavy commercial exploitation has largely removed from most stocks, which is itself the point rather than a curiosity.
Lifecycle and reproduction
Cod are highly fecund — a large female produces millions of eggs — and grow quickly where feeding allows. They mature at two to six years depending on stock and temperature, and can live well over twenty years, though few now do in heavily fished areas. Because fecundity rises steeply with size, the removal of large old females has a disproportionate effect on a stock's ability to recover, which is one of the central lessons of the species' management history.
Cod spawn in winter and early spring in specific, traditional spawning areas, releasing enormous numbers of pelagic eggs into the water column. Larvae drift with currents before settling to the bottom as juveniles. The fidelity of spawning aggregations to particular grounds made them both predictable to fisheries and vulnerable to them.
Feeding and senses
Cod are opportunistic bottom-oriented predators taking crustaceans, molluscs, worms, squid and fish, with diet shifting towards fish as they grow. They hunt largely by sight and smell close to the bottom and around structure, and are notably associated with reefs, wrecks and rough ground where prey concentrates. Feeding activity increases in cold water, which is the reverse of most species an angler encounters and is why cod are a winter fish.
Smell and taste are important — the chin barbel is a chemosensory organ used to locate food on the bottom — and cod will find a scented bait in complete darkness and heavy coloured water. Vision matters at close range. The lateral line detects prey movement near the bottom.
Through the year
In the southern part of the European range cod move inshore as water cools through autumn and winter and retreat as it warms, which makes shore cod fishing a cold, dark, rough-weather pursuit almost by definition. Further north they are available inshore for more of the year. Rough seas that colour the water and dislodge food frequently improve shore fishing markedly.
Distribution
North Atlantic on both sides, from the Barents Sea and Greenland south to the Bay of Biscay in the east and to New England in the west. The global IUCN category is Vulnerable — but that assessment dates from 1996 and has not been revisited, which is worth knowing before leaning on it. The meaningful unit for cod is the stock, not the species: stock status differs enormously between areas, and ICES issues advice per stock for exactly that reason.
This is a biological range — where the species occurs, not a prediction that you will catch one. To browse the fishing geography FishingHQ holds, start at fishing places.
Why anglers care
A principal winter target for shore and boat sea anglers across northern Europe, and the species that most shapes heavy shore tackle design. Also the species where recreational anglers most directly encounter the reality of fisheries management, since retention rules vary substantially by area and change.
Handling and returning
Cod suffer barotrauma when brought up quickly from depth: the swimbladder expands, and a fish showing an everted stomach or protruding eyes cannot re-submerge unaided. If a fish is to be returned, bring it up as slowly as conditions allow and consider a descending device where deep-water release is routine. Handle with wet hands and support the body; a large cod is heavy and its jaw will not carry it.
Going further
- What does atlantic cod eat? — feeding biology, kept separate from what anglers infer from it.
- Atlantic cod vs Saithe — how to tell them apart.
- Atlantic cod vs Haddock — how to tell them apart.
A soft-mouthed fish that arrives from depth
Cod present two handling problems and neither is the fish being dangerous. There are no meaningful spines, no teeth worth avoiding and no sharp covers.
The first problem is the mouth. A cod's jaw tissue is soft and tears easily, so a fish lifted by the lower jaw — the grip anglers default to on large fish — can be damaged before it is even unhooked. Support the body, use a net for anything substantial, and lift with two hands rather than by the head.
The second is depth, and it is the one that decides survival. Cod taken from any real depth suffer swim bladder expansion they cannot equalise, and a fish that arrives with its stomach protruding from its mouth and bulging eyes is not recoverable by being put back gently. It floats and it dies.
Where release is intended from depth, a descending device returns the fish to a depth at which the gas recompresses. Venting is the older approach and is easier to do badly. Where neither is available, the honest position is that the fish is unlikely to survive release and the decision about whether to fish that depth is the one that mattered.
Scientific evidence
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
- A review of catch-and-release angling mortality with implications for no-take reserves — Reviews in Fish Biology and Fisheries 15:129–154, 2005 (Scientific literature)Relied on for: Review of catch-and-release mortality including barotrauma, depth and release method.States this directlyCitation checked — the work exists and is described correctly
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: Fisheries science on gadoid biology and capture effects.Background and mechanism onlyCitation checked — the work exists and is described correctly
The ground cod use, and why rough bottom is where the shore fishery happens
Cod are a demersal predator of cold water, and the shore fishery for them exists because of a specific relationship between the fish, the ground and the sea state.
THEY ARE BOTTOM-ORIENTED BUT NOT BOTTOM-FIXED. Cod feed on and near the seabed, taking crustaceans, molluscs, worms and fish, and they move over ground rather than holding a fixed station. Their mouth and feeding style suit hard broken ground with a lot of prey in it — rock, boulder, mussel bed, kelp stump, wreck and the mixed ground where sand meets rock.
WHICH IS WHY SHORE COD FISHING IS ROUGH-GROUND FISHING. The ground that holds the food is the ground that costs terminal tackle, and the whole design of shore cod fishing — rotten-bottom links, pulley rigs, heavy line — exists to fish ground that would otherwise be unfishable. An angler avoiding tackle losses is usually avoiding the fish.
THE DEPTH RANGE IS ENORMOUS and the inshore fish are a shallow fringe of a distribution running to hundreds of metres. That matters practically because the boat fishery and the shore fishery are working different parts of the same population, and the size structure differs accordingly.
COLOURED, DISTURBED WATER IS PART OF THE HABITAT RATHER THAN AN OBSTACLE TO IT. A sea that has been stirred by weather dislodges food from the ground and reduces visibility, and cod feed confidently in it in a way they do not in clear calm water. The relationship between rough weather and inshore cod fishing is well established among practitioners and is consistent with what the fish eats and how it finds it.
AND THE STOCK IS THE UNIT THAT MATTERS. Cod occur across the North Atlantic in stocks whose status differs enormously, and the sensible question about cod anywhere is not about the species but about the stock in that area. Advice is issued per stock for that reason.
Scientific evidence
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Depth range, habitat association, distribution, spawning mode and recorded maximum size for the species.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Habitat, life history and seasonal occurrence of the species in north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That management advice for these species is issued per stock rather than per species, and that stock status differs between areas.Background and mechanism onlyCitation checked — the work exists and is described correctly
The cod year: cold water inshore, and why the shore season is a winter one
In the southern part of the European range, shore cod fishing is a cold-weather pursuit almost by definition, and the reason is thermal rather than traditional.
COD ARE A COLD-WATER SPECIES near their southern limit in the southern North Sea, the Channel and the Irish Sea. As inshore water warms through summer, they retreat to deeper, cooler water. As it cools through autumn and winter, they move back within reach of the shore. The season is therefore set by the temperature the water reaches rather than by a month, and it starts later after a warm autumn.
FURTHER NORTH THE PATTERN FLATTENS. Where inshore water stays cold enough year-round, cod are available inshore for much more of the year, and the winter-only framing simply does not apply. The mechanism is the same; the outcome differs entirely with latitude.
SPAWNING SHAPES LATE WINTER. Cod spawn in winter and early spring in specific traditional areas, and adults move to those grounds. Fish are in poorer condition after spawning and improve through the feeding period that follows.
WEATHER MATTERS MORE THAN SEASON WITHIN THE SEASON. A gale that colours the water and dislodges food onto the ground frequently produces the best inshore fishing of the year, and the two or three days after a big sea are widely regarded as the most productive. This is practitioner consensus supported by a plausible mechanism rather than a measured effect, and it is worth labelling as such.
AND THE LONGER TREND IS PART OF THE ANSWER. The southern limit of cod has been shifting, distribution has changed markedly over recent decades, and inshore cod fishing in parts of the southern range is not what it was within living memory. That is a stock and climate question rather than a seasonal one, and it means historical accounts of a local cod season may describe a fishery that no longer behaves that way.
Scientific evidence
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Depth range, habitat association, distribution, spawning mode and recorded maximum size for the species.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Habitat, life history and seasonal occurrence of the species in north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That management advice for these species is issued per stock rather than per species, and that stock status differs between areas.Background and mechanism onlyCitation checked — the work exists and is described correctly
How cod spawn, and what made the aggregations so easy to fish out
Cod reproduction is the most consequential piece of fish biology in the North Atlantic, because the way the species spawns is exactly what made it vulnerable to the fisheries that depleted it.
THE STRATEGY IS MASS BROADCAST. Cod spawn in winter and early spring, releasing very large numbers of pelagic eggs into the water column. A large female produces eggs in numbers that are hard to picture. The eggs drift, the larvae drift, and the survivors settle to the bottom as juveniles wherever the currents have taken them.
AND THE AGGREGATIONS ARE FAITHFUL TO PARTICULAR GROUND. Cod return to specific, traditional spawning areas, and they do so predictably in time and place. That fidelity is the important fact: it made the spawning shoals findable by fisheries year after year, at the moment the fish were most concentrated and least evasive, and it is a large part of the story of how several stocks were reduced so far and why some have not recovered.
LARGE FEMALES ARE NOT INTERCHANGEABLE WITH SMALL ONES. Egg production rises steeply with size, and larger older females spawn over a longer period and produce larvae with better survival. A stock whose age structure has been truncated by fishing has lost more reproductive capacity than its total weight suggests, which is why the historical fish of twenty-five kilograms are a management observation rather than a curiosity.
RECOVERY IS SLOW AND NOT GUARANTEED. Several depleted cod stocks have failed to rebuild even after severe restriction, and the reasons — changed ecosystems, altered temperature, loss of the older age classes — are still argued about. FishingHQ records that as unresolved because it is.
WHAT THIS SECTION DOES NOT DO. It does not identify spawning grounds or times for the purpose of fishing them. The predictability of a spawning aggregation is the reason for restrictions, not an opportunity.
Scientific evidence
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Depth range, habitat association, distribution, spawning mode and recorded maximum size for the species.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Habitat, life history and seasonal occurrence of the species in north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That management advice for these species is issued per stock rather than per species, and that stock status differs between areas.Background and mechanism onlyCitation checked — the work exists and is described correctly
How big cod get, and why the historic figures are a management record
Cod size is the clearest case in this catalogue of maximum figures describing a different world rather than an achievable one.
THE ORDINARY FISH. Most rod-caught cod in accessible European water are between forty and seventy centimetres and one to four kilograms. That is what a good day produces and it is what the shore fishery is built around.
A GOOD FISH is over ninety centimetres and around nine kilograms. In most inshore fisheries in the southern range that is a notable capture rather than a routine one.
THE EXCEPTIONAL FIGURES ARE HISTORICAL. Fish well over twenty-five kilograms are recorded. They are not a target and in most areas they are not a realistic possibility, because a fish of that size requires an age structure that heavy exploitation has removed from most stocks. The maximum is real; the population that produced it largely is not.
WHICH MAKES THE NUMBER INFORMATIVE RATHER THAN ASPIRATIONAL. The gap between what cod can reach and what they now typically reach is a direct measurement of what happened to the stocks, and it is more useful read that way than as a record to chase.
GROWTH VARIES WITH STOCK AND TEMPERATURE. Cod in different parts of the range grow at very different rates and mature at different sizes, so a length-for-age figure from one area does not transfer. Where a minimum size applies it is set for a stock and an area, and it changes.
AND THE PRACTICAL CONSEQUENCE FOR AN ANGLER. A large cod is old, and in a stock under pressure it is disproportionately valuable in the water. That is an argument for returning big fish that rests on demography rather than on sentiment.
Scientific evidence
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Depth range, habitat association, distribution, spawning mode and recorded maximum size for the species.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Habitat, life history and seasonal occurrence of the species in north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That management advice for these species is issued per stock rather than per species, and that stock status differs between areas.Background and mechanism onlyCitation checked — the work exists and is described correctly
Tackle chosen for depth, tide and ground rather than for the fish's strength
Cod tackle is a good illustration of a general principle in sea angling: the fish is rarely the design constraint, and understanding what actually is makes tackle choices obvious.
DEPTH AND TIDE SET THE LEAD, AND THE LEAD SETS EVERYTHING ELSE. Fishing on the bottom in forty metres with a tide running requires enough weight to hold, and how much weight depends almost entirely on the diameter of the line being dragged through the water rather than on the fish. Thinner line means less water resistance means less lead means better bite detection and less effort. That single chain of consequences explains why braided line changed deep-water cod fishing so completely.
THE GROUND DECIDES THE STRENGTH. Over clean sand or mud, a cod can be played on light tackle without difficulty. Over a wreck or hard reef, the fish must be lifted clear of structure immediately or it will not be landed, and that requires a rod with lifting power and line that will survive contact. Wreck tackle is heavy because of the wreck.
COD FIGHT BY WEIGHT AND DEPTH, NOT BY SPEED. A cod is a heavy, deep-bodied fish that resists steadily and uses the current rather than running, so what tackle needs is lifting capacity and a reel with the retrieve to recover line, not a drag capable of surviving a long fast run.
SHORE FISHING IS A DIFFERENT PROBLEM AGAIN and it is mostly about casting a bait to where the fish are in a sea that is moving. Distance, holding capability and the ability to present a large bait dominate the choice, and the fish that arrives is frequently smaller than the tackle suggests.
BAROTRAUMA MAKES TACKLE A WELFARE VARIABLE IN DEEP WATER. A cod brought quickly from depth suffers swim bladder expansion, and a fish that is to be returned has better prospects if it is brought up steadily and released promptly. Tackle heavy enough to shorten the fight is, in that context, the kinder option — the reverse of the usual assumption.
AND HOOK SIZE FOLLOWS THE BAIT RATHER THAN THE FISH. Cod take large baits and a hook must be large enough to leave the point clear, which is why cod hooks look oversized next to the mouths they end up in.
Practitioner consensus
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Established shore and boat angling practice, including tackle selection and the reasoning behind it.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: The widely restated sea angling practice for this species, recorded as a consensus position rather than as an original observation.States this directlyCitation checked — the work exists and is described correctly
A big mouth and a broad appetite: bait chosen for scent, size and staying on the hook
Cod are among the least selective feeders a sea angler pursues, which shifts the bait question from what they will eat to what will still be there when they arrive.
THE FISH TAKES ALMOST ANYTHING OF ANIMAL ORIGIN. A cod's gut contents routinely include fish, crabs, molluscs, worms, squid, starfish and things no fish should reasonably eat. So bait selection is not about persuading a cod to accept an item; it is about presenting a large, strongly scented item at the right depth and having it survive long enough.
SIZE IS DELIBERATE AND IT IS A SELECTION TOOL. A large bait deters small fish and crabs from stripping it and, in practice, selects for larger cod. That is why cod baits look excessive — big worm baits, whole squid, large fish sections, or several baits combined into a cocktail on one hook. A small neat bait in a cod mark is eaten by everything else first.
SCENT AND OIL DO THE WORK IN DEEP OR COLOURED WATER. Cod hunt substantially by smell, particularly at depth and at night, and baits that leak oil and amino acids into the tide draw fish from further away. Fresh oily fish, squid and worm all do this; a washed-out bait does not, which is why baits are refreshed rather than left down indefinitely.
DURABILITY IS THE OTHER HALF AND IT SETS THE PRACTICAL CHOICE. In a strong tide, in the presence of crabs, or when casting hard from a beach, a bait must stay on the hook. Squid, and baits bound with bait elastic, survive; a soft worm bait cast at distance does not without help. Combining a soft attractive bait with a durable one is the standard resolution.
SHELLFISH BAITS AFTER A BLOW ARE A REAL AND SPECIFIC PATTERN. A storm that breaks razor clams, mussels and other shellfish out of the ground produces a period in which cod are actively feeding on them along a coast, and matching that is one of the clearest bait-matching situations in shore fishing.
AND WHERE BAIT IS DUG OR GATHERED, PERMISSION AND RESTRICTION APPLY. Worm digging and shellfish collection are regulated in many areas by area, season, quantity or permit, and the arrangements differ. The competent authority is the source.
Practitioner consensus
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Established shore and boat angling practice, including tackle selection and the reasoning behind it.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: The widely restated sea angling practice for this species, recorded as a consensus position rather than as an original observation.States this directlyCitation checked — the work exists and is described correctly
Shore, boat and wreck: three cod fisheries with almost nothing in common
Cod are fished for in three distinct ways, and the differences between them are larger than the similarities — which is why advice from one is so often useless in another.
SHORE FISHING IS A BAIT-AND-DISTANCE DISCIPLINE conducted mostly at night, mostly in the colder months, and mostly in unsettled water. The essentials are a large scented bait, enough lead to hold in the surf and tide, and the ability to reach the ground where fish are working. Coloured water after a blow is the classic condition because it brings cod close in and puts food in suspension. The method is patient and static; the skill is in bait, timing and reading the beach.
BOAT FISHING OVER OPEN GROUND is bottom fishing with bait at anchor or on the drift, and its main variable is tide. Enough lead to hold, a trace that presents the bait naturally, and the discipline to refresh bait rather than leave it down. This is the most forgiving of the three and the best introduction to the species.
WRECK AND ROUGH-GROUND FISHING IS A DIFFERENT PROPOSITION ENTIRELY. Cod hold on and around structure, and both bait and lure methods are used — pirks, large jigs and soft plastics worked over the wreck, or baits fished on the ground. The difficulty is tackle loss and the requirement to move a hooked fish away from structure at once, and the tackle section explains the consequences for gear.
JIGGING AND LURE FISHING HAS GROWN CONSIDERABLY and it is genuinely effective — a large soft plastic or a metal worked near the bottom takes cod well and is more mobile than bait fishing. It also avoids the bait-supply problem entirely.
DEPTH GOVERNS WHETHER RELEASE IS POSSIBLE, as with every deep-water species. A cod from substantial depth suffers barotrauma and its prospects on release are poor without recompression; a cod from the shore or shallow ground is generally returnable. That is worth deciding before fishing rather than at the rail.
AND COD ARE SUBJECT TO MANAGEMENT MEASURES THAT DIFFER BY AREA AND CHANGE, sometimes substantially. What may be retained, in what quantity and when is a matter for the competent authority and nothing here indicates it.
Practitioner consensus
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Established shore and boat angling practice, including tackle selection and the reasoning behind it.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: The widely restated sea angling practice for this species, recorded as a consensus position rather than as an original observation.States this directlyCitation checked — the work exists and is described correctly
Where to go next
Similar and related fish
- Atlantic herringLarger cod take herring where the shoals are available, which is one of the reasons cod condition varies so much between areas with and without a herring stock.
- CapelinIn the northern part of the range capelin replaces sandeel as the principal prey, and the inshore capelin spawning migration draws cod with it.
- HaddockGadoids sharing water and traces. Haddock have a black lateral line and a dark thumbprint; cod have a pale lateral line. They also feed differently, which decides the bait.
- Lesser sandeelSandeel is a dominant item in North Sea cod diets during the months when the sandeels are out of the sand and in the water column, and cod distribution over sandy ground reflects it.
- SaitheGadoids of the same family. Saithe is separated from the true pollack by a straight pale lateral line where the pollack's curves, and from cod by body form and the forked tail.
What these connections rest on (5)
Scientific evidence — 5 connections
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Atlantic herring
Recorded diet evidence identifies Clupea harengus as a food item of this predator at species level. The edge is written at that granularity and no further.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Food items recorded for this predator, including Clupea harengus.States this directlyPassage read and verified
- FAO Species Identification Guides for Fishery Purposes and the FAO Species Catalogues — Food and Agriculture Organization of the United Nations (Scientific institute)Relied on for: Species account describing the diet of this predator in the region where Clupea harengus occurs.Background and mechanism onlyCitation checked — the work exists and is described correctly
Capelin
Recorded diet evidence identifies Mallotus villosus as a food item of this predator at species level. The edge is written at that granularity and no further.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Food items recorded for this predator, including Mallotus villosus.States this directlyPassage read and verified
- FAO Species Identification Guides for Fishery Purposes and the FAO Species Catalogues — Food and Agriculture Organization of the United Nations (Scientific institute)Relied on for: Species account describing the diet of this predator in the region where Mallotus villosus occurs.Background and mechanism onlyCitation checked — the work exists and is described correctly
Haddock
An identification and feeding comparison naming both binomials.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: That Melanogrammus aeglefinus and Gadus morhua are both Gadidae of the North Atlantic continental shelf with overlapping distributions.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: The morphological separation of haddock from cod by lateral line colour and the shoulder blotch, and their differing feeding habits.States this directlyCitation checked — the work exists and is described correctly
Lesser sandeel
Recorded diet evidence identifies Ammodytes marinus as a food item of this predator at species level. The edge is written at that granularity and no further.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Food items recorded for this predator, including Ammodytes marinus.States this directlyPassage read and verified
- FAO Species Identification Guides for Fishery Purposes and the FAO Species Catalogues — Food and Agriculture Organization of the United Nations (Scientific institute)Relied on for: Species account describing the diet of this predator in the region where Ammodytes marinus occurs.Background and mechanism onlyCitation checked — the work exists and is described correctly
Saithe
An identification comparison naming both binomials, addressing one of the worst naming collisions in sea angling.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: That Pollachius virens and Gadus morhua are both Gadidae of the North Atlantic with overlapping distributions.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: The morphological separation of Pollachius virens from Pollachius pollachius by lateral line form and jaw projection.States this directlyCitation checked — the work exists and is described correctly
How it is caught
- Drift fishingWorking ground rather than anchoring over it, which finds fish spread across mixed bottom instead of concentrated on one feature.
- JiggingPirks and heavy jigs worked vertically over wreck and rough ground from a boat, taking fish that are feeding above the bottom.
- Kayak fishingInshore rough ground holding cod is reachable by kayak in settled conditions, and a drifting kayak presents a bait or lure over it more slowly than a powered drift.
- LedgeringBait presented hard on the bottom from boat or shore, which is where cod feed and where the food a rough sea dislodges ends up.
- SurfcastingThe shore cod fishery: large baits fished on the bottom over rough ground in cold, coloured, disturbed water.
What these connections rest on (5)
Practitioner consensus — 5 connections
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
Drift fishing
An established way this species is taken recreationally in north-west European waters, recorded because it is true rather than because it satisfies a gate.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Shore and boat practice in north-west European sea angling for the species and method described, presented across multiple independent contributors.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this quarry to this method, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Jigging
An established way this species is taken recreationally in north-west European waters, recorded because it is true rather than because it satisfies a gate.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Shore and boat practice in north-west European sea angling for the species and method described, presented across multiple independent contributors.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this quarry to this method, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Kayak fishing
Established angling practice for this species, recorded as convention. The note states the property of the animal or its water that makes the method the answer.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Established sea-angling technique and its application to this species.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this species and method.Background and mechanism onlyCitation checked — the work exists and is described correctly
Ledgering
An established way this species is taken recreationally in north-west European waters, recorded because it is true rather than because it satisfies a gate.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Shore and boat practice in north-west European sea angling for the species and method described, presented across multiple independent contributors.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this quarry to this method, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Surfcasting
An established way this species is taken recreationally in north-west European waters, recorded because it is true rather than because it satisfies a gate.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Shore and boat practice in north-west European sea angling for the species and method described, presented across multiple independent contributors.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this quarry to this method, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Gear for this fish
- Fish strip and cut baitThe workhorse cod bait, alone or tipping a worm — a tapered mackerel strip fished from the thick end so it works in the tide.
- LugwormSoft, full of body fluid, and strongly scented — which is what winter cod in coloured water are actually responding to.
- Metal jigsThe pirk is the oldest artificial in this fishery and works on the drop: a cod holding over hard ground responds to something falling and fluttering above it, which is how a wounded fish behaves and how a lifted-and-dropped metal behaves.
- Paternoster rigThe same arrangement scaled up, with fewer and stronger hooklengths, is the standard shore and boat presentation for cod over mixed ground.
- Peeler crabWidely used for cod over mixed and rough ground, frequently in combination with worm rather than alone.
- Soft plasticsA large shad on a heavy head has largely replaced the pirk over wreck and reef because it can be fished slowly at depth without the foul-hooking that an unweighted treble-hung metal produces in a shoal.
- Squid and cuttlefishA standard cod bait, alone or tipping a worm — the combination exists because worm brings the scent and squid stops it washing off.
- Uptide rigInshore winter cod over shallow rough and mixed ground are a traditional uptide quarry from anchored boats.
What these connections rest on (8)
Practitioner consensus — 8 connections
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
Fish strip and cut bait
A practitioner claim about a bait-species pairing.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Practitioner treatment of mackerel strip and cocktail baits for cod.Citation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practitioner guidance on cut bait preparation and cocktail baits.Citation checked — the work exists and is described correctly
Lugworm
Standard winter shore practice, independently described.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Lugworm as the standard winter shore bait for cod and whiting.Citation checked — the work exists and is described correctly
- Angling Times — Bauer Media (Specialist angling publication)Relied on for: Contemporary winter shore bait practice.Citation checked — the work exists and is described correctly
Metal jigs
A practitioner claim about which lure family answers this species' feeding or holding behaviour.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Established shore and boat lure practice for the species in north-west European seas.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated lure selection for this species, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Paternoster rig
Which quarry a terminal arrangement is directed at is established practitioner knowledge, converging across independent angling traditions and literatures, and is labelled as consensus rather than as tested result.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK sea angling practice as reported by practitioners, including rig construction and the species each is directed at.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated descriptions of established terminal-rig convention, recorded as practitioner consensus rather than as scholarship.Background and mechanism onlyCitation checked — the work exists and is described correctly
Peeler crab
Established angling convention about what a bait is used for. Convention is what this is, and labelling it as convention is what stops it being read as a tested result.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK sea angling practice as reported and restated by practitioners, including shore technique, bait use and species behaviour.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated angling practice and belief, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Soft plastics
A practitioner claim about which lure family answers this species' feeding or holding behaviour.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Established shore and boat lure practice for the species in north-west European seas.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated lure selection for this species, recorded as practitioner consensus rather than as tested fact.Background and mechanism onlyCitation checked — the work exists and is described correctly
Squid and cuttlefish
A practitioner claim about a species-bait pairing.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Practitioner treatment of squid and worm cocktail baits for cod.Citation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practitioner accounts of cocktail baits combining worm and squid.Citation checked — the work exists and is described correctly
Uptide rig
That anglers conventionally choose this arrangement when targeting this fish. It is a claim about practice rather than about the fish, and it does not assert that the arrangement is necessary or that it will succeed.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Long-running published description of British sea angling practice, including boat and shore terminal arrangements, grip leads and the conditions each is chosen for.States this directlyCitation checked — the work exists and is described correctly
- Angling Times — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK angling practice as reported by practitioners, including sea terminal tackle convention and its development.States this directlyCitation checked — the work exists and is described correctly
Where it lives
What these connections rest on (1)
Scientific evidence — 1 connection
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Rocky shores and reefs
Habitat association documented in the fisheries science literature.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Habitat and depth records for Gadus morhua.States this directlyPassage read and verified
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: Cod habitat use and distribution in UK waters.FishingHQ's interpretation of what it saysCitation checked — the work exists and is described correctly
Where you will find it
- Chesil BeachHistorically the beach's winter fish, taken from the deeper eastern sections, though western Channel abundance has changed considerably over recent decades.
- DenmarkTaken from shore and boat through the colder half of the year on both the Baltic and North Sea sides, under measures that have been revised repeatedly as the stocks changed.
- Greenland and the high ArcticPresent at the edge of its range here, with a documented boom and collapse driven by warming, cooling and fishing together within the twentieth century.
- IcelandThe historic foundation of the Icelandic economy and still within reach of a small boat, on a shelf where warm Atlantic and Arctic water meet.
- Morecambe Bay and the north-west England coastThe winter codling fishery from the open shores and structures of this coast, on the eastern Irish Sea pattern: following rough weather and cooling water rather than a date.
- Norway and the Nordic coastCod in numbers and at sizes largely lost further south, in cold deep water close to the shore, which is the basis of the Norwegian coast's reputation.
- Portland Bill and the Portland RaceWorks the deeper ground around the headland on the seasonal pattern common to the western Channel.
- ShetlandOccupies the hard ground and deeper water around the islands, and was one of the two species the historic haaf fishery was built on.
10 more
- The Baltic Sea Fishing regions
- The Channel shingle coasts Fishing regions
- The Firth of Clyde Fishing regions
- The Isle of Man Fishing regions
- The Moray Firth Fishing regions
- The Norfolk and Suffolk sandbank coast Fishing regions
- The north-east England coast Fishing regions
- The Severn Estuary Fishing regions
- The Wash and the Lincolnshire coast Fishing regions
- The Yorkshire coast Fishing regions
What these connections rest on (18)
Scientific evidence — 18 connections
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Chesil Beach
A distribution association between an animal and a described water body, which is what the `inhabits` predicate is for — the kind of water rather than a named mark.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, depth and ground preference of fishes in British and north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association and depth range recorded for the species.Background and mechanism onlyPassage read and verified
Denmark
That a species occurs in these waters, drawn from distribution science and stock assessment. It is a statement about where the animal lives and is not a statement that anybody will catch one, still less where.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association of the species named, including its occurrence in the waters of the jurisdiction named.States this directlyPassage read and verified
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: Stock distribution and assessment across the European ecoregions, which is the basis for stating that a species occurs in a given national sea area.States this directlyCitation checked — the work exists and is described correctly
Greenland and the high Arctic
A distribution association between an animal and a described water body, which is what the `inhabits` predicate is for — the kind of water rather than a named mark.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association and depth range recorded for the species, including its occurrence in the water body concerned.States this directlyPassage read and verified
- The IUCN Red List of Threatened Species — International Union for Conservation of Nature (Conservation authority)Relied on for: Assessment and range account for the species, including the systems and coasts it occupies.Background and mechanism onlyCitation checked — the work exists and is described correctly
Iceland
That a species occurs in these waters, drawn from distribution science and stock assessment. It is a statement about where the animal lives and is not a statement that anybody will catch one, still less where.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association of the species named, including its occurrence in the waters of the jurisdiction named.States this directlyPassage read and verified
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: Stock distribution and assessment across the European ecoregions, which is the basis for stating that a species occurs in a given national sea area.States this directlyCitation checked — the work exists and is described correctly
Morecambe Bay and the north-west England coast
A claim that a place contains the ground, water and seasonal conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine, estuarine and freshwater fishes of the British Isles, including which coasts and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
Norway and the Nordic coast
A distributional claim taken from reference works on the fishes of the region rather than from angling report. It states presence and asserts nothing about a fishery.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association, depth range and feeding behaviour recorded for the species concerned.States this directlyPassage read and verified
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat and biology of the fishes of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
Portland Bill and the Portland Race
A distribution association between an animal and a described water body, which is what the `inhabits` predicate is for — the kind of water rather than a named mark.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, depth and ground preference of fishes in British and north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association and depth range recorded for the species.Background and mechanism onlyPassage read and verified
Shetland
A distribution association between an animal and a described water body, which is what the `inhabits` predicate is for — the kind of water rather than a named mark.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, depth and ground preference of fishes in British and north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association and depth range recorded for the species.Background and mechanism onlyPassage read and verified
The Baltic Sea
Occurrence of the species in this system or along this coast: a statement about the animal's distribution, not a venue recommendation.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of fishes in British and north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, depth range and habitat association recorded for the species.States this directlyPassage read and verified
The Channel shingle coasts
Occurrence of the species in this system or along this coast: a statement about the animal's distribution, not a venue recommendation.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of fishes in British and north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, depth range and habitat association recorded for the species.States this directlyPassage read and verified
The Firth of Clyde
A claim that a place contains the ground, water and seasonal conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine, estuarine and freshwater fishes of the British Isles, including which coasts and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
The Isle of Man
A distributional claim about where a species occurs, which is a claim about the world and rests on the reference literature rather than on angling report.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association and biology of the fishes of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: UK marine fisheries science: distribution, survey data and the biological basis of management advice.States this directlyCitation checked — the work exists and is described correctly
The Moray Firth
A claim that a place contains the ground, water and seasonal conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine, estuarine and freshwater fishes of the British Isles, including which coasts, estuaries and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
The Norfolk and Suffolk sandbank coast
A claim that a place contains the ground and conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine and estuarine fishes of the British Isles, including which coasts and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
The north-east England coast
A claim that a place contains the ground and conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine and estuarine fishes of the British Isles, including which coasts and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
The Severn Estuary
A distribution association between an animal and a described water body, which is what the `inhabits` predicate is for — the kind of water rather than a named mark.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, depth and ground preference of fishes in British and north-west European waters.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association and depth range recorded for the species.Background and mechanism onlyPassage read and verified
The Wash and the Lincolnshire coast
A claim that a place contains the ground, water and seasonal conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine, estuarine and freshwater fishes of the British Isles, including which coasts, estuaries and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
The Yorkshire coast
A claim that a place contains the ground, water and seasonal conditions the species is associated with. It is a distributional statement about the world, it rests on the regional reference literature, and it deliberately asserts nothing about access, permission or catch.
- The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution and habitat association of the marine, estuarine and freshwater fishes of the British Isles, including which coasts and ground types a species occupies.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified
Understanding this fish
- Parasites in fish, and what freezing actually does about themThe fish an angler is most likely to find a nematode in, and the reason this record exists in a form that reassures rather than alarms: an anisakid in a cod fillet is ordinary, is dealt with by cooking, and says nothing about the water.
- Pollock and pollackAlaska pollock is a Gadus rather than a Pollachius, which places it beside cod rather than beside either pollack.
What these connections rest on (2)
Authoritative guidance — 1 connection
Stated by a fisheries authority, scientific institute or recognised angling body. Authoritative, but summarising rather than demonstrating.
Parasites in fish, and what freezing actually does about them
A claim that a species is one in which a parasite hazard is recognised. The FDA's own species tables are the basis for that kind of claim, and it is not an angling observation.
- Fish and Fishery Products Hazards and Controls Guidance — US Food and Drug Administration, Center for Food Safety and Applied Nutrition, 2022 (Standards body)Relied on for: Hazards and controls for fish and fishery products: scombrotoxin formation and the species groups associated with it, seafood parasites, and natural toxins.States this directlyPassage read and verified
Scientific evidence — 1 connection
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Pollock and pollack
The fourth fish in the collision sits in this genus.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, morphology and nomenclature for Pollachius pollachius, Pollachius virens and Gadus chalcogrammus.States this directlyPassage read and verified
Rules and access
- What a bag limit is forA species subject to repeatedly revised recreational measures in response to stock advice, which is what a limit responding to assessment rather than to biology looks like from the shore.
- Size limits and retentionRules about which fish may be kept and how many — a management tool with a clear rationale and, in places, a well-known weakness.
What these connections rest on (2)
Authoritative guidance — 2 connections
Stated by a fisheries authority, scientific institute or recognised angling body. Authoritative, but summarising rather than demonstrating.
What a bag limit is for
A link to a rule CONCEPT rather than to a rule. The framework is described from published sources; what any current rule requires is a matter for the competent authority and is not stated.
- The IUCN Red List of Threatened Species — International Union for Conservation of Nature (Conservation authority)Relied on for: Global extinction-risk assessment, population trend and the threats identified for the species concerned.States this directlyCitation checked — the work exists and is described correctly
- JNCC species and habitat conservation advice — Joint Nature Conservation Committee (Conservation authority)Relied on for: Conservation status, designation and legal protection of species and habitats in the United Kingdom.States this directlyCitation checked — the work exists and is described correctly
Size limits and retention
Retention measures for cod vary by area and are revised in line with stock advice.
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That management measures are set at stock level and revised with advice.FishingHQ's interpretation of what it saysCitation checked — the work exists and is described correctly
Environment and conservation
What these connections rest on (1)
Authoritative guidance — 1 connection
Stated by a fisheries authority, scientific institute or recognised angling body. Authoritative, but summarising rather than demonstrating.
Fish stocks and sustainability
Cod stock status is assessed individually and varies substantially between areas.
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That cod are assessed and managed as separate stocks with very different statuses.States this directlyCitation checked — the work exists and is described correctly
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: The scientific basis of cod stock assessment in UK waters.FishingHQ's interpretation of what it saysCitation checked — the work exists and is described correctly
History and culture
What these connections rest on (1)
Practitioner consensus — 1 connection
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
Fishing and food culture
A record joined to the history behind it. Historical placement rests on the documentary and scholarly sources cited; where the tradition is living rather than documented, the claim is kept at the level those sources support.
- Fishers' Craft and Lettered Art: Tracts on Fishing from the End of the Middle Ages — University of Toronto Press, 1997 (Scientific literature)Relied on for: Medieval and early-modern European fishing practice, gear, fishery organisation and the communities that used them.States this directlyCitation checked — the work exists and is described correctly
- The Compleat Angler, or the Contemplative Man's Recreation — Richard Marriot, 1653 (Reference work)Relied on for: Seventeenth-century English angling practice, its social setting and the literary tradition it founded.States this directlyPassage read and verified
Check the rules before you fish
Fishing laws, bylaws, access rules, seasons, bait restrictions and permitted methods vary by location and can change. Check the current rules from the relevant authority and the water you intend to fish before fishing.
Check with:
- Current national or regional law for where you are fishing
- Current local bylaws
- The relevant fisheries authority
- The landowner, club or fishery whose water it is
- Any restrictions specific to the species or the method you intend to use
Sources for this page
- ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: That cod are assessed and managed as separate stocks with very different statuses, and that stock-level rather than species-level statements are the meaningful ones.States this directlyCitation checked — the work exists and is described correctly
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: Life history, spawning behaviour and the biology underlying stock assessment.States this directlyCitation checked — the work exists and is described correctly
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Taxonomy, family, range and size.States this directlyPassage read and verified
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: The current global IUCN category for Gadus morhua (Vulnerable, criteria A1bd) and the fact that the assessment dates from 1996 — which is the part a reader most needs to know before relying on it.States this directlyPassage read and verified
How FishingHQ labels evidence is explained in the evidence policy.