HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsRockfishes, rockcods and thornyheadsHalfbanded rockfish Halfbanded rockfish (Sebastes semicinctus) Scientific name: Sebastes semicinctus Gilbert, 1897 The Halfbanded rockfish (Sebastes semicinctus) is a marine fish of the family Sebastidae. Native range: Eastern Central Pacific, Point Pinos, Monterey County in central California, USA to central Baja California, Mexico. BiologyCommon offshore water on flat bottom. Viviparous.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSebastes semicinctusFamilySebastidae (Rockfishes, rockcods and thornyheads)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Depth range58–402 m (190–1319 ft)EnvironmentMarine; demersal; depth range 58 - 402 mClimateSubtropicalDistributionEastern Central Pacific: Point Pinos, Monterey County in central California, USA to central Baja California, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (tm=5; tmax=15) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026