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Arctic char

Fish · Last reviewed 2026-08-10

The most northerly freshwater fish in the world, a cold-demanding char with brilliant orange-red spawning bellies and highly distinct landlocked populations.

An Arctic char in an aquarium over pale gravel, showing pale cream and pink spots scattered over a darker olive flank, an orange-red belly, and orange paired fins each with a clean white leading edge.
Arctic char (Salvelinus alpinus). Char carry PALE spots on a dark ground — the reverse of trout and salmon — and the white leading edges on the orange paired fins are the second genus character.Identified by: Two characters place it in Salvelinus and both are legible: the spots are PALE, cream and pink, on a darker ground, the reverse of the dark-on-light spotting of trout and salmon; and the paired fins are orange with a sharp white leading edge. Within Salvelinus, the absence of vermiculation on back and dorsal separates it from brook trout, the confusion that matters in a catalogue holding both. Provenance names a Lake Inari population at the Arctic Centre, Lapland.Xepheid — CC BY-SA 4.0, via Wikimedia Commons — source, licence

Arctic char lives further north than any other freshwater fish, and it exists in two very different forms: sea-run populations that behave like sea trout, and landlocked populations isolated in deep cold lakes since the last glaciation.

Those landlocked populations are the interesting part. Isolated for thousands of years, many have diverged into locally distinctive forms — different sizes, different feeding niches, sometimes several forms within a single lake. Britain and Ireland hold a number of such relict populations in deep upland lakes, and they are vulnerable to warming water and to nutrient enrichment.

In spawning condition the underside turns brilliant orange to blood red, and the white leading edges on the lower fins are unmistakable.

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
Salvelinus alpinus
Family
Salmonidae
Water
Freshwater, Saltwater, Moves between fresh and salt water
Conservation status
Least Concern
Regions
Arctic & Subarctic, Northern Europe, Britain & Ireland, North America
  • Pale pink, cream or red spots on a darker ground, and no black spots anywhere — the character separating char from trout.
  • Brilliant white leading edges on the pelvic, pectoral and anal fins.
  • Belly turning orange to deep red in spawning condition, particularly in males.
  • Small scales, a deeply forked tail, and a slender body form.

Size

Typical
0.3–1.5 kg (10 oz–3.3 lb)
Large
2–5 kg (4.4–11 lb)

Exceptional: FishBase records a maximum of 107 cm and 15 kg

Lifecycle and reproduction

Slow-growing in cold water and long-lived. Sea-run fish grow much larger than landlocked ones, and isolated lake populations often mature at very small sizes. Repeat spawning is normal, unlike Pacific salmon.

Spawns in autumn or early winter over gravel in lakes or in tributary streams, with females cutting redds. Spawning temperature and substrate requirements are narrow, which is why populations are sensitive to habitat change.

Feeding and senses

Takes zooplankton, insect larvae, crustaceans and fish depending on the population and the life stage. In lakes with several distinct forms, those forms often occupy different feeding niches.

A cold-water visual feeder operating well in low light and at depth, which is why char are caught deep in summer and shallow in the low light of early and late season.

Through the year

Holds in deep cold water through summer, moves shallow to spawn in autumn, and is accessible to shore anglers mainly in the cold months and at the margins of the season.

Distribution

Europe and North America: Circumpolar . Iceland, Scandinavia, northern Russia (absent in rivers draining to Baltic and White Seas), Jan Mayen, Spitzberg, Kolguev, Bear and New Zemblia islands, northern Siberia, Alaska, Canada and Greenland; absent in the Alps . North America: coastal areas in Atlantic, Arctic and Pacific drainages from Newfoundland and Labrador in Canada to Alaska; south along Alantic Slope to Maine, USA . Landlocked populations in Quebec, Canada and in Maine and New Hampshire in USA

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 prized northern target across Scandinavia, Iceland, Greenland, northern Canada and the deep lakes of Britain and Ireland, taken on flies, small spoons and trolled lures. Its significance is as the emblematic fish of Arctic water and, in Britain, as a relict glacial species of considerable conservation interest. Some populations are protected and several are monitored as climate indicators.

Handling and returning

A cold-water salmonid intolerant of warm water and long fights. Keep the fish in the water, use barbless hooks, handle with wet hands, and release facing into current or with gentle support until it swims off. Relict lake populations warrant particular care and, in many waters, complete release.

Going further

How arctic char are fished, and why

Char are a cold-water salmonid that spends most of its life in open water rather than against structure, and every method that works for them follows from that.

STILLWATER FLY FISHING works because char feed heavily on invertebrates and small fish in the upper water column, and because the lakes they occupy are often clear enough that a fly presented at the right depth is the least alarming thing an angler can offer.

SPINNING covers water, which is the actual problem: char shoal and move, so the difficulty is finding them rather than persuading them. A small spoon or spinner searches a large volume quickly.

TROLLING is the same logic mechanised, and it is the standard answer on the large, deep lakes where char sit well below the surface for much of the year and shore-based methods cannot reach them.

WHAT THIS TELLS YOU GENERALLY. A shoaling open-water fish in a large body of water is a search problem before it is a presentation problem, and the methods that dominate are the ones that cover volume.

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.

  • FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Habitat association, depth range, feeding ecology and prey of the species, from which the method association follows.Background and mechanism onlyPassage read and verified
  • IGFA International Angling Rules and World Record Requirements — International Game Fish Association (Angling or fisheries organisation)Relied on for: Recognised angling methods and the tackle classes used for them internationally.Background and mechanism onlyPassage read and verified

The northernmost freshwater fish, and the relict populations left behind by ice

Arctic char occupy the coldest freshwater habitat on earth and, in the southern part of their range, occupy it as isolated remnants — which makes their habitat description a piece of glacial history as much as a piece of ecology.

THE THERMAL REQUIREMENT IS THE MOST EXTREME OF ANY SALMONID. Char tolerate and prefer colder water than trout or salmon, which is why they are the freshwater fish found furthest north — occurring in lakes and rivers well inside the Arctic where nothing else persists. Cold is not merely tolerated; it is required, and warm water excludes them from habitat that other salmonids use comfortably.

WHICH PRODUCES THE RELICT PATTERN IN THE SOUTH. As the ice sheets retreated after the last glaciation, char were left in deep, cold lakes across Britain, Ireland, the Alps and Scandinavia — waters that stayed cold enough for them while the surrounding country warmed. Those populations have been isolated ever since, in individual lakes, for thousands of years. They have diverged: many are morphologically and genetically distinct, some lakes hold multiple forms differing in size, diet and spawning time, and the taxonomy of the group is correspondingly contested. A lake's char are frequently found nowhere else at all.

WITHIN A LAKE THEY ARE DEEP AND COLD. Char occupy the cold hypolimnion below the thermocline in summer, feeding on zooplankton and benthic invertebrates, and move shallower in cold seasons and to spawn on gravel. In the far north, where whole lakes stay cold, they use the entire water body and become the dominant predator.

SEA-RUN POPULATIONS EXIST IN THE NORTH and are a different proposition — anadromous fish feeding in coastal Arctic waters and returning to fresh water, growing far larger than landlocked ones on much richer marine feeding.

AND THE SOUTHERN RELICTS ARE THE MOST CLIMATE-EXPOSED FISH IN EUROPE. A population confined to the cold deep water of one lake has nowhere to go if that water warms or if the oxygen in it fails — which is what nutrient enrichment does to a deep cold layer. Several such populations have already been lost.

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: Habitat association, depth range, substrate preference, salinity tolerance and temperature range recorded for the species.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 habitat account, including the habitats on which the species depends and the threats to them.Background and mechanism onlyCitation checked — the work exists and is described correctly

Where to go next

Similar and related fish

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.

  • Brook trout

    An identification comparison naming both binomials: Salvelinus alpinus and Salvelinus fontinalis.

    • FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Morphological and distributional data for Salvelinus alpinus and for Salvelinus fontinalis.States this directlyPassage read and verified
    • The IUCN Red List of Threatened Species — International Union for Conservation of Nature (Conservation authority)Relied on for: Separate assessments treating Salvelinus alpinus and Salvelinus fontinalis as distinct species.States this directlyCitation checked — the work exists and is described correctly

How it is caught

What these connections rest on (3)

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.

  • Spinning

    A practitioner claim about how Salvelinus alpinus is commonly fished, following from where and how it feeds.

    • General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practitioner accounts of fishing for arctic char.Citation checked — the work exists and is described correctly
    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Practitioner treatment of the methods used for arctic char and comparable species.Citation checked — the work exists and is described correctly

  • Stillwater fly fishing

    A practitioner claim about how Salvelinus alpinus is commonly fished, following from where and how it feeds.

    • General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practitioner accounts of fishing for arctic char.Citation checked — the work exists and is described correctly
    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Practitioner treatment of the methods used for arctic char and comparable species.Citation checked — the work exists and is described correctly

  • Trolling

    A practitioner claim about how Salvelinus alpinus is commonly fished, following from where and how it feeds.

    • General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practitioner accounts of fishing for arctic char.Citation checked — the work exists and is described correctly
    • Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Practitioner treatment of the methods used for arctic char and comparable species.Citation checked — the work exists and is described correctly

Gear for this fish

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.

  • Spoons

    A practitioner claim about which lure family answers this species' feeding or holding behaviour.

    • General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated North American lure practice for this species.Background and mechanism onlyCitation checked — the work exists and is described correctly
    • IGFA International Angling Rules and World Record Requirements — International Game Fish Association (Angling or fisheries organisation)Relied on for: Recognition of the species as an established sport fish taken on artificial lures, and the tackle conventions used for it.States this directlyPassage read and verified

  • Streamers

    A practitioner claim about which lure family answers this species' feeding or holding behaviour.

    • Trout & Salmon — Bauer Media (Specialist angling publication)Relied on for: Fly categories and their application to salmonids in running and still water.States this directlyCitation checked — the work exists and is described correctly
    • Still Water Fly-Fishing — Andre Deutsch, 1952 (Specialist angling publication)Relied on for: Still-water fly categories, and the feeding observations they are chosen from.Background and mechanism onlyCitation 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.

  • Deep cold lakes

    A claim that the species depends on the cold layer below the summer thermocline, which is a thermal-tolerance claim about the animal rather than an angling observation, and rests on the reference literature accordingly.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, habitat association, thermal requirements and life history of the freshwater fishes of the British Isles and north-west Europe.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 depth range, temperature tolerance and habitat association for the species.States this directlyPassage read and verified

  • Lowland stillwaters

    A habitat association for Salvelinus alpinus taken from the environment and distribution data on its FishBase summary.

    • FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: The environment, depth range and habitat description recorded for Salvelinus alpinus.States this directlyPassage read and verified

  • Upland lakes and hill lochs

    Habitat association recorded for the species, in an environment the catalogue could not express until Sprint 30 modelled it.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Habitat association and distribution of European freshwater fishes, including occurrence in artificial and modified 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: Habitat association, depth range and water-type tolerance recorded for the species.States this directlyPassage read and verified

Where you will find it

3 more
What these connections rest on (11)

Scientific evidence — 11 connections

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

  • Alaska

    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

  • Austria

    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.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, habitat requirement and life history of European freshwater fishes, including their occurrence across the continental range named.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 and habitat association of the freshwater and migratory species named.States this directlyPassage read and verified

  • Canada

    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

  • 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.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, habitat requirement and life history of European freshwater fishes, including their occurrence across the continental range named.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 and habitat association of the freshwater and migratory species named.States this directlyPassage read and verified

  • Lake Geneva

    A distributional claim taken from reference works and databases 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, life history and size recorded for the species concerned.States this directlyPassage read and verified
    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Biology, distribution, life history and conservation status of northern European freshwater and diadromous fishes.States this directlyCitation checked — the work exists and is described correctly

  • Scotland

    A distribution claim about the world, so it rests on the reference works rather than on angling report. FHQ-V005 requires it.

    • FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Distribution, habitat association, water-type tolerance and occurrence records for the species, including its presence in the countries 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 countries and systems it occupies and its population trend within them.States this directlyCitation checked — the work exists and is described correctly

  • Sweden

    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.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, habitat requirement and life history of European freshwater fishes, including their occurrence across the continental range named.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 and habitat association of the freshwater and migratory species named.States this directlyPassage read and verified

  • The Finnish lake district

    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.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, ecology and conservation status of European freshwater and migratory fishes, including in modified and artificial 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: Recorded distribution, habitat association and life history for the freshwater and migratory species named.States this directlyPassage read and verified

  • The Lake District lakes

    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.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, habitat and conservation status of British freshwater fishes, including the isolated glacial-relict populations of northern England.States this directlyCitation checked — the work exists and is described correctly
    • Environment Agency fisheries management, byelaws and rod licensing information — Environment Agency (Government fisheries body)Relied on for: Fisheries monitoring, water quality and species distribution in English rivers and still waters.States this directlyCitation checked — the work exists and is described correctly

  • The River Tay

    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.

    • Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Distribution, ecology and conservation status of the freshwater fishes of the British Isles, including in artificial and modified waters.States this directlyCitation checked — the work exists and is described correctly
    • Environment Agency fisheries management, byelaws and rod licensing information — Environment Agency (Government fisheries body)Relied on for: Fisheries monitoring, water quality and species distribution in English rivers, canals and still waters.States this directlyCitation checked — the work exists and is described correctly

Sources for this page

  • FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Family, maximum size, depth and environment, distribution and the IUCN assessment for Salvelinus alpinus.States this directlyPassage read and verified
  • The IUCN Red List of Threatened Species — International Union for Conservation of Nature (Conservation authority)Relied on for: The Least Concern assessment for Salvelinus alpinus, assessed 29 August 2023.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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