HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsThicktail chub Thicktail chub (Gila crassicauda) Scientific name: Gila crassicauda Baird & Girard, 1854 The Thicktail chub (Gila crassicauda) is a freshwater fish of the family Cyprinidae. Native range: North America, USA. Species factsScientific nameGila crassicaudaFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Common length20.0EnvironmentFreshwater; benthopelagicClimateTemperateDistributionNorth America: USA.Conservation status (IUCN)Extinct (EX)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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