HomeFish encyclopediaRay-finned fishesCusk eelsCusk-eelsBlackbelly cusk Blackbelly cusk (Neobythites nigriventris) Scientific name: Neobythites nigriventris Nielsen, 2002 The Blackbelly cusk (Neobythites nigriventris) is a marine fish of the family Ophidiidae. Native range: Western Central Pacific, eastern Australia. BiologyA benthic species found on the continental shelf and slope. Reproductive strategy possibly similar to other members of this family featuring oviparity, with oval pelagic eggs floating in a gelatinous mass.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNeobythites nigriventrisFamilyOphidiidae (Cusk-eels)OrderOphidiiformes (Cusk eels)ClassActinopterygii (Ray-finned fishes)Depth range325–338 m (1066–1109 ft)EnvironmentMarine; bathydemersal; depth range 325 - 338 mClimateDeep-waterDistributionWestern Central Pacific: eastern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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