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Corkwing wrasse

Fish · Last reviewed 2026-08-17

The small wrasse a light-tackle angler actually catches, a nest-builder that carries weed in its mouth, and the subject of a live wild fishery most anglers have never heard of.

Safety

Fish welfare — Can cause injury needing treatment

Corkwing are nest-building residents of small patches of ground, and are most catchable exactly when a male is guarding eggs. Fishing a mark hard in early summer removes the males and the nests together, and the fish do not move far enough to refill it quickly.

What reduces it: Return them, move after a few fish, and be aware that a rock gully producing corkwing after corkwing in June is a nesting area. Use forceps and wet hands; the scales come off easily.

Worse when:

  • Late spring and early summer
  • Small, isolated patches of weedy ground

If you fish a harbour wall or a rock gully in Britain with a small hook and a scrap of bait, this is the wrasse you will catch. It is under twenty centimetres, it is everywhere there is weed and structure, and until light rock fishing arrived almost nobody was trying to catch one on purpose.

THE MARKS ARE THE IDENTIFICATION. A dark comma-shaped mark behind the eye and a dark spot on the tail stock, on a deep-bodied greenish-brown fish under twenty centimetres. Colour varies enormously — males in breeding condition are patterned in blue and orange lines about the head — but those two marks persist.

IT BUILDS A NEST OUT OF SEAWEED. The male gathers algae in his mouth, wedges it into a crevice or a hollow, shapes it, persuades females to lay in it, and then guards and tends the eggs. That is nest-building in the full sense, done by a common British fish within wading distance of a car park, and it is one of the more remarkable behaviours in this catalogue.

AND THERE IS A COMMERCIAL FISHERY FOR IT THAT HAS NOTHING TO DO WITH FOOD. Corkwing and other wrasse are caught alive in pots and fyke nets and sold to salmon farms, where they eat sea lice off farmed salmon as an alternative to chemical treatment. It is a real and substantial removal of wild fish from inshore ground, it is invisible to almost everybody who fishes that ground, and it is the reason this small fish has become a subject of stock assessment.

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
Symphodus melops
Family
Labridae
Water
Saltwater
Conservation status
Least Concern
Regions
Britain & Ireland, Western Europe, Northern Europe, Mediterranean, North Africa
  • A DARK COMMA OR CRESCENT BEHIND THE EYE, curving down and back from the rear edge of the eye. Present on almost every corkwing and absent from the goldsinny.
  • A DARK SPOT ON THE MIDDLE OF THE TAIL STOCK. A goldsinny's spot sits at the TOP of the tail base, not the middle, which is the fastest way to separate the two small wrasse.
  • DEEP-BODIED AND SMALL — usually 12–20 cm, and a shape closer to a miniature ballan wrasse than to the slim goldsinny.
  • COLOUR IS NO HELP AND VARIES WILDLY: greenish, brown, orange, with breeding males carrying blue and orange lines across the head and gill cover. Use the marks.
  • SOME FEMALES MIMIC THE GOLDSINNY, lacking the comma and resembling the other species closely. Where the mark is absent, the tail-stock spot's position is the character to fall back on.
  • A SMALL WRASSE FROM A HARBOUR WALL IN BRITAIN IS A CORKWING FAR MORE OFTEN THAN ANYTHING ELSE.

Size

Typical
12–18 cm.
Large
Over 20 cm is a large corkwing.

Exceptional: Around 25 cm is the widely reported maximum, and fish of that size are unusual.

Lifecycle and reproduction

Corkwing wrasse mature at one to two years and live to around nine. Unusually, the species has two male forms: large territorial nesting males with full breeding colours, and smaller 'sneaker' males that resemble females, do not build nests, and fertilise eggs opportunistically in another male's nest. That is an alternative reproductive strategy maintained within one population, not a developmental stage, and the two forms coexist. Females lay in the nests of territorial males; eggs are guarded until hatching and larvae are planktonic before settling to weedy hard ground.

The nest is the centre of it. From late spring, territorial males collect filamentous algae and coralline weed in their mouths and build a structured nest in a crevice, under a boulder or in a hollow, then court females to lay in it and guard the eggs, fanning and tending them until they hatch. A single nest may receive eggs from several females. Sneaker males mimic female colouration to approach the nest and release milt. Because reproduction depends on a physical nest in a specific place, corkwing populations are tied to particular patches of ground much more tightly than a broadcast spawner's would be.

Feeding and senses

Small invertebrates picked from weed and rock — amphipods, small crabs, molluscs, worms and barnacles. Corkwing feed by sight through the day over structure and are famously willing to investigate anything small that arrives on the bottom, which is why they are the commonest capture on light tackle from any weedy British shore mark. The same willingness makes them easy to catch in baited pots, which is the basis of the cleaner-fish fishery.

Visual and day-active, like the other wrasse. They rest at night wedged into crevices and are effectively uncatchable after dark, which is a useful negative fact for anybody fishing a rock mark through dusk for something else.

Through the year

Resident, inshore and shallow through the warmer months, moving into slightly deeper water in winter and feeding little in cold conditions. The nesting period in late spring and early summer is the time they are most concentrated and most vulnerable, and it coincides with the season of highest demand from the cleaner-fish fishery.

Distribution

Eastern Atlantic from Norway to Morocco and into the western Mediterranean and Adriatic, in shallow weedy and rocky ground from the low tide mark to about thirty metres. Abundant around the British Isles and Ireland wherever there is weed and hard structure, including harbours, breakwaters and rock gullies.

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

The commonest quarry of British light rock fishing and species hunting, and the fish most likely to be on the end of the smallest hook anybody fishes from a harbour wall. Not eaten in Britain in any quantity. Its real significance is the cleaner-fish fishery: wrasse taken alive for salmon farms represent a substantial and relatively recent removal of small inshore fish, from ground that also produces the angling, and the assessment of that fishery is one of the few places where the status of a small British inshore fish is being actively studied.

Handling and returning

A small fish with large easily-shed scales and a heavy mucus coat, usually caught on a small hook that can be removed in seconds with forceps. Wet hands, no squeezing, straight back. Corkwing are nest-guarders in early summer, and a male removed from a nest is a nest lost, so the argument for returning them quickly and moving on is stronger than the size of the fish suggests.

The nest, the sneaker males, and why this is not a boring little fish

A corkwing wrasse does something almost no other British sea fish does: it builds a structure and looks after its young.

THE MALE GATHERS WEED IN HIS MOUTH. From late spring, territorial males collect filamentous and coralline algae, carry it to a crevice or hollow, and pack and shape it into a nest. The construction is deliberate and the site is defended.

FEMALES LAY IN IT AND HE GUARDS THE RESULT. One nest may hold the eggs of several females. The male fans them, keeps them clean, and drives off intruders until they hatch. Parental care in a fish is uncommon and this is a thorough example of it.

AND SOME MALES CHEAT, PERMANENTLY. Alongside the large territorial males there are smaller males that look like females, build nothing, defend nothing, and dart into another male's nest to release milt while a female is spawning. This is not a stage they grow out of — it is an alternative strategy maintained in the same population, and it exists because a small male has better odds sneaking than fighting.

WHY IT MATTERS FOR THE GROUND RATHER THAN THE FISH. A broadcast spawner scatters eggs into the water column and does not care where it is. A nest-builder is tied to specific patches of specific ground, which means the population depends on the physical structure of a shoreline in a way most sea fish do not, and it means removing males in June removes the nests as well.

IT ALSO EXPLAINS WHY THEY ARE SO EASY TO CATCH IN EARLY SUMMER. A guarding male will attack or investigate almost anything that arrives near his nest, including a hook.

Scientific evidence

Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.

  • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat, identification characters and biology of the fishes of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
  • 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: Diagnostic identification characters, family placement, depth range and distribution as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.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: survey data, distribution and the biological basis of management advice.States this directlyCitation checked — the work exists and is described correctly

The cleaner-fish fishery, and a removal most shore anglers have never heard of

There is a commercial fishery for corkwing and other wrasse in Britain, Ireland and Norway, and it does not sell them as food.

SALMON FARMS USE LIVE WRASSE TO EAT SEA LICE. Sea lice are the dominant health and welfare problem in caged salmon farming, chemical treatments have costs and resistance problems, and wrasse placed in the cages pick lice off the salmon. Wrasse are therefore caught alive — in baited pots and fyke nets on inshore rocky ground — transported, and stocked into farms.

THE SCALE IS NOT SMALL. The demand is for large numbers of small fish, taken from exactly the shallow rocky ground that produces shore angling, and the fishery grew quickly enough that management measures and assessment work followed rather than preceded it.

WHAT MAKES IT DIFFICULT IS THE BIOLOGY ALREADY ON THIS PAGE. Corkwing are nest-tied residents with limited movement, so a patch of coast is a stock that does not refill from elsewhere quickly. They are caught most easily in the nesting season. And the largest fish, which the farms prefer, are the territorial nest-builders.

FISHINGHQ DOES NOT STATE WHAT IS PERMITTED. Minimum sizes, pot limits, seasons and licensing for wrasse fisheries differ by administration and have changed within the last decade. What belongs here is the fact that an inshore fish an angler catches for fun is also the subject of a live-capture fishery, because that context is invisible from the harbour wall and it changes how the ground should be thought about.

WHAT MAY BE DONE WITH THIS FISH IS NOT ON THIS PAGE. Size limits, retention, closed periods and protected status differ between administrations and are revised. Check the current position with the fisheries authority for the water you are fishing.

Authoritative guidance

Stated by a fisheries authority, scientific institute or recognised angling body. Authoritative, but summarising rather than demonstrating.

  • 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: survey data, distribution and the biological basis of management advice.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: Stock assessment and scientific advice for north-east Atlantic fisheries, including the distribution and status of the stocks concerned.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 species behaviour and regional angling practice, recorded as consensus rather than as scholarship.Background and mechanism onlyCitation checked — the work exists and is described correctly

Where to go next

How it is caught

What these connections rest on (2)

Practitioner consensus — 2 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.

  • Light rock fishing

    A statement about how a species is fished, which is angling convention rather than biology and is labelled as such.

    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK sea angling and shore gathering practice as reported by practitioners: ground, seasonal timing, tackle, bait and method convention.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 technique, quarry behaviour and regional practice, recorded as consensus rather than as scholarship.Background and mechanism onlyCitation checked — the work exists and is described correctly

    What anglers actually use a method for, recorded as convention.

    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: UK shore lure fishing practice: tackle scale, presentation and ground.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 and the adoption of imported techniques as reported in the angling press.States this directlyCitation checked — the work exists and is described correctly

  • Float fishing

    A statement about how a species is fished, which is angling convention rather than biology and is labelled as such.

    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK sea angling and shore gathering practice as reported by practitioners: ground, seasonal timing, tackle, bait and method convention.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 technique, quarry behaviour and regional practice, recorded as consensus rather than as scholarship.Background and mechanism onlyCitation checked — the work exists and is described correctly

Gear for this fish

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.

  • Soft plastics

    What anglers actually use a lure for, recorded as convention.

    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: UK shore lure fishing practice: tackle scale, presentation and ground.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 and the adoption of imported techniques as reported in the angling press.States this directlyCitation checked — the work exists and is described correctly

Where it lives

What these connections rest on (3)

Scientific evidence — 3 connections

Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.

  • Harbours, piers and breakwaters

    A distributional claim about where a species is found, resting on the standard regional reference works 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, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

  • Kelp forest

    A distributional claim about where a species is found, resting on the standard regional reference works 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, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

  • Rocky shores and reefs

    A distributional claim about where a species is found, resting on the standard regional reference works 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, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

Understanding this fish

What these connections rest on (3)

Scientific evidence — 2 connections

Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.

  • Amphipods and mysids as prey

    A diet claim recorded at group level, pointed at a modelled prey CATEGORY, because the reference works describe the diet as a group rather than by species. Naming a particular species the catalogue happens to hold would invent a precision the evidence never had.

    • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

  • Decapod crustaceans as prey

    A diet claim recorded at group level, pointed at a modelled prey CATEGORY, because the reference works describe the diet as a group rather than by species. Naming a particular species the catalogue happens to hold would invent a precision the evidence never had.

    • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

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.

  • Mini species and species hunting

    An explainer that carries the mechanism the subject record depends on.

    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: UK shore lure fishing practice: tackle scale, presentation and ground.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 and the adoption of imported techniques as reported in the angling press.States this directlyCitation checked — the work exists and is described correctly

Told apart from

What these connections rest on (3)

Scientific evidence — 1 connection

Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.

  • Cuckoo wrasse

    Taxonomic and practical relatedness recorded because confusable species matter more to a reader than a shared family does, with the evidence naming the species the edge is about.

    • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Identification characters, family placement and biology of Labrus mixtus and of the species it is confused with, as set out for the fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters and family placement of Labrus mixtus as set out in the FAO species identification sheets for the region concerned.States this directlyCitation checked — the work exists and is described correctly

Practitioner consensus — 3 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.

  • Cuckoo wrasse

    A comparison a reader with the animal or the decision in front of them actually needs, joining two records that resolve one another.

    • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

  • Ballan wrasse

    A comparison a reader with the animal or the decision in front of them actually needs, joining two records that resolve one another.

    • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly

  • Shanny

    A comparison a reader with the animal or the decision in front of them genuinely needs.

    • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat association, identification and biology of the fishes and inshore fauna of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
    • 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: Diagnostic characters, family placement, habitat and depth range as set out in the FAO species identification sheets for the region concerned.States this directlyCitation checked — the work exists and is described correctly

Environment and conservation

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.

  • Fish stocks and sustainability

    An environmental effect attached to the thing that causes it, resting on an authoritative source rather than on advocacy.

    • Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: UK inshore fisheries science including the wrasse cleaner-fish fishery, its scale and the assessment work that has followed it.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: Scientific advice on north-east Atlantic inshore fisheries and their assessment.States this directlyCitation checked — the work exists and is described correctly

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

  • The Fishes of the British Isles and North-West Europe — Macmillan, 1969 (Reference work)Relied on for: Distribution, habitat, identification characters and biology of the fishes of the British Isles and north-west Europe.States this directlyCitation checked — the work exists and is described correctly
  • 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: Diagnostic identification characters, family placement, depth range and distribution as set out in the FAO species identification sheets for the eastern Atlantic and Mediterranean.States this directlyCitation checked — the work exists and is described correctly
  • The IUCN Red List of Threatened Species — International Union for Conservation of Nature (Conservation authority)Relied on for: The global Red List category and the assessment behind it, assessed 30 April 2014. A statement about the species across its range and not about any managed stock.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: survey data, distribution and the biological basis of management advice.States this directlyCitation checked — the work exists and is described correctly
  • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK sea angling practice as reported by practitioners: ground, seasonal timing, bait and method convention.States this directlyCitation checked — the work exists and is described correctly

How FishingHQ labels evidence is explained in the evidence policy.

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