HomeFish encyclopediaRay-finned fishesPerch-like fishPerchesSooty darter Sooty darter (Etheostoma olivaceum) Scientific name: Etheostoma olivaceum Braasch & Page, 1979 The Sooty darter (Etheostoma olivaceum) is a freshwater fish of the family Percidae. Native range: North America, found only in the lower Caney Fork system and nearby tributaries of Cumberland River in central Tennessee, USA. BiologyInhabit rocky pools and nearby riffles of headwaters and creeks; also found in streams. Often found in very shallow water less than 4 m deep. Juveniles feed on midge larvae and microcrustaceans; adults on midge larvae, other immature aquatic insects (mayflies, caddisflies, stoneflies), isopods and amphipods. Eggs are found clustered on underside of stone and guarded by males.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEtheostoma olivaceumFamilyPercidae (Perches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.0Common length5.0EnvironmentFreshwater; benthopelagicClimateSubtropicalDistributionNorth America: found only in the lower Caney Fork system and nearby tributaries of Cumberland River in central Tennessee, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tmax=2) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026