HomeFish encyclopediaRay-finned fishesCatfishSea catfishesFlat catfish Flat catfish (Cochlefelis insidiator) Scientific name: Cochlefelis insidiator Kailola, 2000 The Flat catfish (Cochlefelis insidiator) is a brackish-water fish of the family Ariidae. Native range: Western Central Pacific, Papua New Guinea and northern Australia. BiologyDorsal spines (total): 1; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 19 - 23; Vertebrae: 58 - 60. Head and anterior of body depressed; ribs long, angular, impressed in abdominal body wall. Eye covered with head skin; head smooth. Mouth wide, jaws upturned at symphysis; teeth fixed, cardiform, in 1-2 series on jaws and palate; four elongate patches of palatal teeth. No rakers on posterior of first two arches; mandibular barbel longest, reaching dorsal fin. Fin spines slender, weak. Grey or yellowish in color, fins and mouth bright yellow or orange.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCochlefelis insidiatorFamilyAriidae (Sea catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length35.0EnvironmentMarine; brackish; demersalClimateTropicalDistributionWestern Central Pacific: Papua New Guinea and northern Australia.Conservation status (IUCN)Data deficient (DD)Threat 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