HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsPoachersPricklebreast poacher Pricklebreast poacher (Stellerina xyosterna) Scientific name: Stellerina xyosterna Jordan & Gilbert, 1880 The Pricklebreast poacher (Stellerina xyosterna) is a marine fish of the family Agonidae. Native range: Eastern Pacific, Queen Charlotte Islands in British Columbia, Canada to northern central Baja California, Mexico. BiologyDorsal spines (total): 9; Dorsal soft rays (total): 6; Anal spines: 0; Anal soft rays: 9. Caudal fin rounded. Pelvic fins reduced.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameStellerina xyosternaFamilyAgonidae (Poachers)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length16.0Depth range5–75 m (16–246 ft)EnvironmentMarine; demersal; depth range 5 - 75 mClimateSubtropicalDistributionEastern Pacific: Queen Charlotte Islands in British Columbia, Canada to northern central Baja California, Mexico.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