HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsFatheadsBonyskull toadfish Bonyskull toadfish (Cottunculus nudus) Scientific name: Cottunculus nudus Nelson, 1989 The Bonyskull toadfish (Cottunculus nudus) is a marine fish of the family Psychrolutidae. Native range: Southwest Pacific, New Zealand. Species factsScientific nameCottunculus nudusFamilyPsychrolutidae (Fatheads)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Depth range1090–1123 m (3576–3684 ft)EnvironmentMarine; demersal; depth range 1090 - 1123 mClimateTemperateDistributionSouthwest Pacific: New Zealand.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