HomeFish encyclopediaRay-finned fishesCarpsSuckersCopper redhorse Copper redhorse (Moxostoma hubbsi) Scientific name: Moxostoma hubbsi Legendre, 1952 The Copper redhorse (Moxostoma hubbsi) is a freshwater fish of the family Catostomidae. Native range: North America, St. Lawrence River drainage in Quebec, Canada. BiologyOccurs in rocky pools, backwaters and swift runs of medium to large rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMoxostoma hubbsiFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length72.0Common length47.5EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: St. Lawrence River drainage in Quebec, Canada.Conservation status (IUCN)Vulnerable (VU) (D2)Threat to humansHarmlessResilienceVery Low, minimum population doubling time more than 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