HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsFatlips minnow Fatlips minnow (Phenacobius crassilabrum) Scientific name: Phenacobius crassilabrum Minckley & Craddock, 1962 The Fatlips minnow (Phenacobius crassilabrum) is a freshwater fish of the family Cyprinidae. BiologyInhabits gravel and rubble runs and riffles of creeks and small to medium rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePhenacobius crassilabrumFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length11.2Common length7.5EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: upper Tennessee River drainage (from South Fork Holston River south to Little Tennessee River) in western Virginia, western North Carolina, eastern Tennessee and northeastern Georgia, 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