HomeFish encyclopediaRay-finned fishesCatfishSea catfishesSmooth-headed catfish Smooth-headed catfish (Plicofollis nella) Scientific name: Plicofollis nella Valenciennes, 1840 The Smooth-headed catfish (Plicofollis nella) is a brackish-water fish of the family Ariidae. Native range: Western Pacific, South and southeast Asia, southern New Guinea and northern Australia. Species factsScientific namePlicofollis nellaFamilyAriidae (Sea catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length47.0EnvironmentMarine; brackish; demersalClimateTropicalDistributionWestern Pacific: South and southeast Asia, southern New Guinea and northern Australia.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