HomeFish encyclopediaRay-finned fishesSalmonsSalmonidsArctic char Arctic char (Salvelinus alpinus alpinus) Scientific name: Salvelinus alpinus alpinus Linnaeus, 1758 The Arctic char (Salvelinus alpinus alpinus) is a freshwater fish of the family Salmonidae. In the aquarium it needs water at 4–16°C (39–61°F). Arctic char care at a glanceTemperature4–16°C (39–61°F) BiologyAnadromous forms spend a considerable time of their lives at sea; non-migratory populations remain in lakes and rivers. Found in rivers, estuaries and lakes with cold, clear water. Occurs mainly in lakes. At the sea, lives along coasts. Inhabits deep runs and pools of medium to large rivers, and lakes. Nerito-pelagic. Freshwater populations feed on planktonic crustaceans, amphipods, mollusks, insects and fishes. Anadromous individuals feed little in freshwater and never feed during migrations. Spawning usually takes place on pebble to stone bottom in lakes. Riverine stocks spawn in rivers with slow current (02.-0.8 m/s), but there are some riverine anadromous stocks (in Norway) which spawn in fast-flowing waters of riffles. Extremely sensitive to water pollution (cold water and oxygen oriented). Marketed fresh, smoked, canned, and frozen. Eaten sautéed, broiled, fried, microwaved and baked. Parasitized by tapewormSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSalvelinus alpinus alpinusFamilySalmonidae (Salmonids)OrderSalmoniformes (Salmons)ClassActinopterygii (Ray-finned fishes)Maximum length107Common length40.0Depth range30–70 m (98–230 ft)EnvironmentMarine; freshwater; brackish; benthopelagic; anadromous; depth range 30 - 70 mClimateTemperateDistributionEurope: northern Atlantic southward to southern Norway, also Iceland and southern Greenland. Isolated populations in Northern UK, Scandinavia, Finland and the Alps. North America: Landlocked populations in Quebec, Canada and in Maine and New Hampshire in USAThreat to humansHarmlessUsesFisheries: minor commercial; aquaculture: commercial; gamefish: yesResilienceLow, minimum population doubling time 4.5 - 14 years (tm=7-10; tmax=24; Fec=400) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026