HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsDeep-sea bristly scorpionfishesSlender scorpionfish Slender scorpionfish (Lioscorpius longiceps) Scientific name: Lioscorpius longiceps G?nther, 1880 The Slender scorpionfish (Lioscorpius longiceps) is a marine fish of the family Setarchidae. Native range: Western Pacific, Japan to Western Australia. BiologyDorsal spines (total): 27; Dorsal soft rays (total): 9-10; Anal spines: 2; Anal soft rays: 6. Color in life pink, with 5 indefinite large dark blotches on the sides of the body: the first three below the spinous dorsal, one below the soft dorsal and one on the base of the caudal fin.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLioscorpius longicepsFamilySetarchidae (Deep-sea bristly scorpionfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length13.0Depth range180–410 m (591–1345 ft)EnvironmentMarine; bathydemersal; depth range 180 - 410 mClimateDeep-waterDistributionWestern Pacific: Japan to Western Australia.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesFisheries: of no interest SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026