HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsBigmouth shiner Bigmouth shiner (Notropis dorsalis) Scientific name: Notropis dorsalis Agassiz, 1854 The Bigmouth shiner (Notropis dorsalis) is a freshwater fish of the family Cyprinidae. BiologyInhabits shallow sandy and silty runs and pools of headwaters, creeks and small to medium rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNotropis dorsalisFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length8.0EnvironmentFreshwater; benthopelagicClimateTemperateDistributionNorth America: Great Lakes, Hudson Bay (Red River) and Mississippi River basins from Michigan, USA to Manitoba, Canada and from eastern Illinois to Platte River system in Wyoming and Colorado, USA; disjunct populations in western New York and Pennsylvania, West Virginia, Ohio and Michigan, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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