HomeFish encyclopediaRay-finned fishesFlatfishesRighteye floundersWinter flounder Winter flounder (Pseudopleuronectes americanus) Scientific name: Pseudopleuronectes americanus Walbaum, 1792 The Winter flounder (Pseudopleuronectes americanus) is a marine fish of the family Pleuronectidae. Native range: Western Atlantic, Labrador, Canada to Georgia, USA. BiologyAdults inhabit soft muddy to moderately hard bottoms. Feed predominantly in daytime on organisms living in, on or near the bottom; shrimps, amphipods, crabs, sea urchins and snails. Batch spawner.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudopleuronectes americanusFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length64.0Depth range5–143 m (16–469 ft)EnvironmentMarine; demersal; oceanodromous; depth range 5 - 143 mClimateTemperateDistributionWestern Atlantic: Labrador, Canada to Georgia, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; aquaculture: experimental; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.11-0.7(?); tm=2-3; tmax=10) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026