HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsDeepwater flatheadsLongfin flathead Longfin flathead (Bembras longipinnis) Scientific name: Bembras longipinnis Imamura & Knapp, 1998 The Longfin flathead (Bembras longipinnis) is a marine fish of the family Bembridae. Native range: Western Pacific, northern to northwestern Australia. BiologyAnal soft rays: 13 - 14. Head depressed. Body without large scute-like spines. Infraorbital bones forming a strong ridge, confluent with uppermost preopercular spine and having 4-6 spines. Ratio of pectoral-fin length to caudal fin length 1.05 to 1.15.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBembras longipinnisFamilyBembridae (Deepwater flatheads)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Depth range143–215 m (469–705 ft)EnvironmentMarine; demersal; depth range 143 - 215 mClimateSubtropicalDistributionWestern Pacific: northern to northwestern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026