HomeFish encyclopediaRay-finned fishesCarpsSuckersSnake River sucker Snake River sucker (Chasmistes muriei) Scientific name: Chasmistes muriei Miller & Smith, 1981 The Snake River sucker (Chasmistes muriei) is a freshwater fish of the family Catostomidae. Native range: North America, known only from one specimen collected in Snake River below Jackson Dam in Wyoming, USA. Species factsScientific nameChasmistes murieiFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; demersalClimateSubtropicalDistributionNorth America: known only from one specimen collected in Snake River below Jackson Dam in Wyoming, USA.Conservation status (IUCN)Extinct (EX)Threat to humansHarmlessResilienceVery Low, minimum population doubling time more than 14 years (Assuming tm>10) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026