HomeFish encyclopediaRay-finned fishesCarpsSuckersDesert sucker Desert sucker (Catostomus clarkii) Scientific name: Catostomus clarkii Baird & Girard, 1854 The Desert sucker (Catostomus clarkii) is a freshwater fish of the family Catostomidae. BiologyInhabits small to medium rivers. Small individuals are found in riffles while adults in pools during day and riffles at night.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCatostomus clarkiiFamilyCatostomidae (Suckers)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length33.0EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: lower Colorado River drainage including Pluvial White River and Meadow Valley Wash in Nevada, USA; Virgin River in Utah, Arizona and Nevada, USA; Bill Williams River in Arizona, USA; and Gila River in New Mexico and Arizona, USA and in northern Sonora, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 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