HomeFish encyclopediaRay-finned fishesCatfishSea catfishesBigmouth sea catfish Bigmouth sea catfish (Ketengus typus) Scientific name: Ketengus typus Bleeker, 1847 The Bigmouth sea catfish (Ketengus typus) is a freshwater fish of the family Ariidae. Native range: Asia, Andaman Islands, Thailand to Indonesia. BiologyFound in rivers and brackish waters near the shore. Feeds on invertebrates and small fishes. Not seen in markets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameKetengus typusFamilyAriidae (Sea catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentMarine; freshwater; brackish; demersalClimateTropicalDistributionAsia: Andaman Islands, Thailand to Indonesia.Conservation status (IUCN)Not EvaluatedThreat to humansTraumatogenicResilienceMedium, 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