HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsRockfishes, rockcods and thornyheadsSquarespot rockfish Squarespot rockfish (Sebastes hopkinsi) Scientific name: Sebastes hopkinsi Cramer, 1895 The Squarespot rockfish (Sebastes hopkinsi) is a marine fish of the family Sebastidae. Species factsScientific nameSebastes hopkinsiFamilySebastidae (Rockfishes, rockcods and thornyheads)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length29.0Depth range18–183 m (59–600 ft)EnvironmentMarine; reef-associated; depth range 18 - 183 mClimateSubtropicalDistributionEastern Pacific: Farallon Islands (off San Francisco) in California, USA to central Baja California and Guadalupe Island (off north central Baja California) in Mexico; rare north of Monterey Bay, California.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (tmax=19; tm=5) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026