HomeFish encyclopediaRay-finned fishesPerch-like fishPerchesBoulder darter Boulder darter (Etheostoma wapiti) Scientific name: Etheostoma wapiti Etnier & Williams, 1989 The Boulder darter (Etheostoma wapiti) is a freshwater fish of the family Percidae. BiologyLives in fast, rocky riffles of small to medium rivers; also found in creeks.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEtheostoma wapitiFamilyPercidae (Perches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.5EnvironmentFreshwater; benthopelagicClimateSubtropicalDistributionNorth America: Elk River and Shoal Creek systems (in Tennessee River drainage) in southern Tennessee and northern Alabama, USA. Rare in Elk River and possibly extirpated in Shoal Creek.Conservation status (IUCN)Vulnerable (VU) (D2)Threat 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