HomeFish encyclopediaRay-finned fishesCatfishSea catfishesCoates' catfish Coates' catfish (Neoarius coatesi) Scientific name: Neoarius coatesi Kailola, 1990 The Coates' catfish (Neoarius coatesi) is a freshwater fish of the family Ariidae. Native range: Oceania, endemic to Sepik and Ramu rivers in Papua New Guinea. BiologyFound in rivers only. Occurs at temperatures ranging from 26 to 32?C. Mainly diurnal. Feeds mainly on fine and coarse detritus, other plant material (particularly seeds and small pieces of bark), and especially prawns. Also preys on aquatic insects and nymphs, fishes, worms and leeches.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNeoarius coatesiFamilyAriidae (Sea catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length75.0Common length45EnvironmentFreshwater; benthopelagicClimateTropicalDistributionOceania: endemic to Sepik and Ramu rivers in Papua New Guinea.Conservation status (IUCN)Not EvaluatedThreat to humansTraumatogenicUsesFisheries: subsistence fisheriesResilienceVery Low, minimum population doubling time more than 14 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