HomeFish encyclopediaRay-finned fishesCarpsSuckersRiver carpsucker River carpsucker (Carpiodes carpio) Scientific name: Carpiodes carpio Rafinesque, 1820 The River carpsucker (Carpiodes carpio) is a freshwater fish of the family Catostomidae. BiologyOccurs in lakes and pools and backwaters of creeks and small to large rivers. Adult feeds on organic detritus.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCarpiodes carpioFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length64.0Common length34.3EnvironmentFreshwater; demersalClimateSubtropicalDistributionNorth America: Mississippi River basin from Pennsylvania to Montana, south to Louisiana, USA; Gulf Slope drainages from Calcasieu River in Louisiana to Rio Grande in Texas and New Mexico, USA; also in Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesGamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (tmax=10) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026