HomeFish encyclopediaRay-finned fishesCatfishEeltail catfishesNaked-headed catfish Naked-headed catfish (Euristhmus nudiceps) Scientific name: Euristhmus nudiceps G?nther, 1880 The Naked-headed catfish (Euristhmus nudiceps) is a freshwater fish of the family Plotosidae. Native range: Indo-West Pacific, northwestern Australia, the Arafura Sea and Papua New Guinea. Known from the freshwater reaches of the Mekong estuary. BiologyOccurs inshore over soft bottoms. Found along coastlines and in estuaries, including freshwater reaches. Not seen in markets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEuristhmus nudicepsFamilyPlotosidae (Eeltail catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length33.0EnvironmentMarine; freshwater; brackish; demersalClimateTropicalDistributionIndo-West Pacific: northwestern Australia, the Arafura Sea and Papua New Guinea. Known from the freshwater reaches of the Mekong estuary.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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