HomeFish encyclopediaRay-finned fishesPerch-like fishPerchesKentucky darter Kentucky darter (Etheostoma rafinesquei) Scientific name: Etheostoma rafinesquei Burr & Page, 1982 The Kentucky darter (Etheostoma rafinesquei) is a freshwater fish of the family Percidae. Native range: North America, known only from the upper Green and Gasper River (Barren River tributary) systems in Kentucky in the USA. BiologyInhabits rocky pools and adjacent riffles of creeks and small rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEtheostoma rafinesqueiFamilyPercidae (Perches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.5EnvironmentFreshwater; benthopelagicClimateTemperateDistributionNorth America: known only from the upper Green and Gasper River (Barren River tributary) systems in Kentucky in the USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026