HomeFish encyclopediaRay-finned fishesCodsCods and haddocksAtlantic tomcod Atlantic tomcod (Microgadus tomcod) Scientific name: Microgadus tomcod Walbaum, 1792 The Atlantic tomcod (Microgadus tomcod) is a freshwater fish of the family Gadidae. Native range: Northwest Atlantic, southern Labrador in Canada to Virginia in USA. BiologyDorsal spines (total): 0; Anal spines: 0. Body elongated; head small; eyes relatively small. Pelvic fins with a slightly elongated filament. Olive green brown or yellow dorsally, paler ventrally; with dark mottling on sides and fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMicrogadus tomcodFamilyGadidae (Cods and haddocks)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length38.1Depth range0–69 m (0–226 ft)EnvironmentMarine; freshwater; brackish; demersal; anadromous; depth range 0 - 69 mClimateTemperateDistributionNorthwest Atlantic: southern Labrador in Canada to Virginia in USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2-4) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026