HomeFish encyclopediaRay-finned fishesCatfishNorth American freshwater catfishesSmoky madtom Smoky madtom (Noturus baileyi) Scientific name: Noturus baileyi Taylor, 1969 The Smoky madtom (Noturus baileyi) is a freshwater fish of the family Ictaluridae. Native range: North America, Citico Creek (Little Tennessee River system) in Monroe County in Tennessee, USA. BiologyOccurs in clear, cool, rocky riffles, runs and flowing pools of creeks.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNoturus baileyiFamilyIctaluridae (North American freshwater catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length7.3Common length4.6EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: Citico Creek (Little Tennessee River system) in Monroe County in Tennessee, USA.Conservation status (IUCN)Critically Endangered (CR) (B1+2c)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tm SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026