HomeMarine aquarium fishOther marine fishKelp perch Kelp perch (Brachyistius frenatus) Scientific name: Brachyistius frenatus Gill, 1862 The Kelp perch (Brachyistius frenatus) is a marine fish of the family Embiotocidae. Native range: Eastern Pacific, northern British Columbia, Canada to central Baja California, Mexico, including Guadalupe Island, off north central Baja California. BiologyDorsal spines (total): 7 - 9; Dorsal soft rays (total): 13-16; Anal spines: 3; Anal soft rays: 21 - 24; Vertebrae: 31 - 34. Color variable, olive brown to coppery above lateral line, with dark pigment under each scale, bright below lateral line; dark on axil; fins either pale or rosy.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBrachyistius frenatusFamilyEmbiotocidae (Surfperches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length22.0Depth range30 m (98 ft)EnvironmentMarine; demersal; depth range ? - 30 mClimateSubtropicalDistributionEastern Pacific: northern British Columbia, Canada to central Baja California, Mexico, including Guadalupe Island, off north central Baja California.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: public aquariumsResilienceHigh, minimum population doubling time less than 15 months (tm=1) More other marine fishStriped seaperchEmbiotoca lateralisSilver surfperchHyperprosopon ellipticumPile perchRhacochilus vaccaHooknoseAgonus cataphractusPacific spadefishChaetodipterus zonatusGlassy sweeperPempheris schomburgkiiSee all other marine fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026