HomeFish encyclopediaRay-finned fishesCatfishNorth American freshwater catfishesBlack River madtom Black River madtom (Noturus maydeni) Scientific name: Noturus maydeni Egge, 2006 The Black River madtom (Noturus maydeni) is a freshwater fish of the family Ictaluridae. Native range: North America, Black and St. Francis river drainages in Arkansas and Missouri, USA. BiologyDorsal soft rays (total): 7; Anal soft rays: 15 - 17; Vertebrae: 40 - 43Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNoturus maydeniFamilyIctaluridae (North American freshwater catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length8.1EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: Black and St. Francis river drainages in Arkansas and Missouri, 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