HomeFish encyclopediaRay-finned fishesPerch-like fishKnifejawsBarred knifejaw Barred knifejaw (Oplegnathus fasciatus) Scientific name: Oplegnathus fasciatus Temminck & Schlegel, 1844 The Barred knifejaw (Oplegnathus fasciatus) is a marine fish of the family Oplegnathidae. Native range: Northwest Pacific, Japan, Korea, Taiwan. Eastern Central Pacific: Hawaii. BiologyInhabits coastal rocky reefs. Benthopelagic. Juveniles associate with drifting seaweed.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOplegnathus fasciatusFamilyOplegnathidae (Knifejaws)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length80.0Depth range1–10 m (3–33 ft)EnvironmentMarine; reef-associated; depth range 1 - 10 mClimateTemperateDistributionNorthwest Pacific: Japan, Korea, Taiwan. Eastern Central Pacific: Hawaii.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; aquaculture: commercial; gamefish: yes SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026