HomeFish encyclopediaRay-finned fishesCatfishSea catfishesBesudo sea catfish Besudo sea catfish (Cathorops tuyra) Scientific name: Cathorops tuyra Meek & Hildebrand, 1923 The Besudo sea catfish (Cathorops tuyra) is a freshwater fish of the family Ariidae. Native range: Central and South America, Pacific drainage rivers and estuaries from Panama to Peru. BiologyFound in marine, brackish and fresh waters. Penetrates lower reaches of rivers. Marketed fresh.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCathorops tuyraFamilyAriidae (Sea catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length29.0EnvironmentMarine; freshwater; brackish; demersalClimateTropicalDistributionCentral and South America: Pacific drainage rivers and estuaries from Panama to Peru.Conservation status (IUCN)Data deficient (DD)Threat to humansTraumatogenicUsesFisheries: commercialResilienceMedium, 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