HomeFish encyclopediaRay-finned fishesCarpsSuckersGreater redhorse Greater redhorse (Moxostoma valenciennesi) Scientific name: Moxostoma valenciennesi Jordan, 1885 The Greater redhorse (Moxostoma valenciennesi) is a freshwater fish of the family Catostomidae. BiologyPigmentation: For both males and females, sides are yellow-gold, dorsal surfaces are olive in color, and caudal fins are bright red on the outside and becoming orange at the center.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMoxostoma valenciennesiFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length80.0Common length52.5EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: Great Lakes-St. Lawrence River, Hudson Bay (in Red River) and Mississippi River basins from Quebec in Canada and Vermont in USA to southern Ontario in Canada and northern Minnesota in USA, and south to Ohio River in Kentucky, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesGamefish: yesResilienceLow, minimum population doubling time 4.5 - 14 years (tm=5-13) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026