HomeFish encyclopediaRay-finned fishesCarpsSuckersSmallmouth redhorse Smallmouth redhorse (Moxostoma breviceps) Scientific name: Moxostoma breviceps Cope, 1870 The Smallmouth redhorse (Moxostoma breviceps) is a freshwater fish of the family Catostomidae. Native range: North America, USA. Species factsScientific nameMoxostoma brevicepsFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 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