HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsScorpionfishes or rockfishesGalactacma scorpionfish Galactacma scorpionfish (Sebastapistes galactacma) Scientific name: Sebastapistes galactacma Jenkins, 1903 The Galactacma scorpionfish (Sebastapistes galactacma) is a marine fish of the family Scorpaenidae. Native range: Pacific Ocean, Guam, Pohnpei, Hawaii, and Rapa. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 9-10; Anal spines: 3; Anal soft rays: 5. Lachrymal spines 2. Only Micronesian Sebastapistes with cycloid to emarginate scales on its sides.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSebastapistes galactacmaFamilyScorpaenidae (Scorpionfishes or rockfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length4.9Depth range6–29 m (20–95 ft)EnvironmentMarine; reef-associated; depth range 6 - 29 mClimateTropicalDistributionPacific Ocean: Guam, Pohnpei, Hawaii, and Rapa.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousResilienceHigh, 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