HomeFish encyclopediaRay-finned fishesCatfishNorth American freshwater catfishesSaddled madtom Saddled madtom (Noturus fasciatus) Scientific name: Noturus fasciatus Burr, Eisenhour & Grady, 2005 The Saddled madtom (Noturus fasciatus) is a freshwater fish of the family Ictaluridae. Native range: North America, USA. BiologyCollected from riffle habitats with gravel, cobble, rubble, or slate substrate; mean depth of 0.2 meters (0.1 - 0.3 m), and stream width averaged 13.6 meters (range 8 - 25 m); mean current readings from the 3 capture sites ranged from 0.59 - 0.76 meters per second. Riffles are typically occupied during daylight hours when individuals are likely buried within the interstices of gravel. Based on its small adult size (to 72 mm SL), this species probably lives no longer than 2-3 years. Preserved females contain mature oocytes from late May to late July; females are mature at sizes as small as 44 mm SL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNoturus fasciatusFamilyIctaluridae (North American freshwater catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length6.2EnvironmentFreshwater; benthopelagicClimateSubtropicalDistributionNorth America: 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