HomeFreshwater aquarium fishOther freshwater fishTrout-perch Trout-perch (Percopsis omiscomaycus) Scientific name: Percopsis omiscomaycus Walbaum, 1792 The Trout-perch (Percopsis omiscomaycus) is a freshwater fish of the family Percopsidae. BiologyOccurs in lakes, deep flowing pools of creeks, and rivers. Usually found over sand. Moves into the shallows of lakes at night to feed and moves back to deeper water as dawn approaches. Feeds on insect larvae, amphipods and fishes. Important forage fish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePercopsis omiscomaycusFamilyPercopsidae (Trout-perches)OrderPercopsiformes (Trout-perches, Pirate perches and Cavefish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Common length8.8Depth range10–61 m (33–200 ft)EnvironmentFreshwater; demersal; depth range 10 - 61 mClimateTemperateDistributionNorth America: Atlantic and Arctic basins throughout most of Canada, and south to Potomac River drainage in Virginia, USA; Yukon River drainage in Yukon Territory and Alaska; Great Lakes and Mississippi River basins south to West Virginia, Kentucky, Illinois, Missouri, North Dakota and Montana in the USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: public aquariums; bait: occasionallyResilienceMedium, minimum population doubling time 1.4 - 4.4 years (tm=2-3; tmax=4) More other freshwater fishPumpkinseedLepomis gibbosusLined soleAchirus lineatusShort-tailed pipefishMicrophis brachyurus brachyurusFinescale tigerfishDatnioides microlepisFreshwater garfishXenentodon cancilaSouth American lungfishLepidosiren paradoxaSee all other freshwater fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026