HomeFish encyclopediaRay-finned fishesGrinnersDeepsea LizardfishesDeep-sea lizardfish Deep-sea lizardfish (Bathysaurus ferox) Scientific name: Bathysaurus ferox G?nther, 1878 The Deep-sea lizardfish (Bathysaurus ferox) is a marine fish of the family Bathysauridae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 17; Anal spines: 0; Anal soft rays: 11 - 13. Body deepest ahead of dorsal fin. Head depressed and bony, mouth large, teeth conical, recurved and mostly depressible. Preserved specimens, dark ventrally.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBathysaurus feroxFamilyBathysauridae (Deepsea Lizardfishes)OrderAulopiformes (Grinners)ClassActinopterygii (Ray-finned fishes)Maximum length64.0Depth range600–3500 m (1969–11483 ft)EnvironmentMarine; bathydemersal; depth range 600 - 3500 m, usually 1000 - 2500 mClimateDeep-waterDistributionEastern Atlantic: northern British Isles to Guinea; also off South Africa. Reported from Iceland. Western Atlantic: Davis Strait to Rio Grande Rise, Brazil. Southwest Pacific: New Zealand and Australia. Southeast Pacific: Nazca and Sala-y-Gomez. Macristium chavesi (pelagic larvae) known from Dominican Republic, Bay of Biscay, Azores, and in the Indian Ocean.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026