HomeFish encyclopediaRay-finned fishesCarpsSuckersSmallfin redhorse Smallfin redhorse (Moxostoma robustum) Scientific name: Moxostoma robustum Cope, 1870 The Smallfin redhorse (Moxostoma robustum) is a freshwater fish of the family Catostomidae. BiologyInhabits silty to rocky pools and slow runs of small to medium rivers. Also found in impoundments.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMoxostoma robustumFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length42.0EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: Atlantic Slope from Peedee River drainage in Virginia and Cape Fear River drainage in North Carolina to Oconee River system (Altamaha River drainage) in Georgia, 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