HomeMarine aquarium fishEels, lionfish & predatorsJenkin's scorpionfish Jenkin's scorpionfish (Scorpaenopsis cacopsis) Scientific name: Scorpaenopsis cacopsis Jenkins, 1901 The Jenkin's scorpionfish (Scorpaenopsis cacopsis) is a marine fish of the family Scorpaenidae. Native range: Eastern Central Pacific, Hawaii. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 5. Vertical scale rows 50-55; lachrymal bone with 2 spines over maxillary, first points down and forward, second points down and back, sometimes second split distally into 2 points; suborbital ridge usually with 5 spines, sometimes some spines split in larger specimens.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameScorpaenopsis cacopsisFamilyScorpaenidae (Scorpionfishes or rockfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length51.0Depth range4–60 m (13–197 ft)EnvironmentMarine; reef-associated; depth range 4 - 60 mClimateTropicalDistributionEastern Central Pacific: Hawaii.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceVery Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.) More eels, lionfish & predatorsRed lionfishPterois volitansHumpback nohuSebastapistes coniortaHawaiian lionfishDendrochirus barberiHawaiian turkeyfishPterois sphexDevil firefishPterois milesBlackfoot firefishParapterois heteruraSee all eels, lionfish & predators SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026