HomeFish encyclopediaRay-finned fishesPerch-like fishSlopefishesLongtailed slopefish Longtailed slopefish (Symphysanodon maunaloae) Scientific name: Symphysanodon maunaloae Anderson, 1970 The Longtailed slopefish (Symphysanodon maunaloae) is a marine fish of the family Symphysanodontidae. Native range: Pacific Ocean, off Japan and Lombok, Indonesia to the Hawaiian Islands and Sala y G?mez Ridge. BiologyThis species is frequently consumed by the lutjanid Pristipomoides zonatus at Pathfinder Reef, Mariana Archipelago.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphysanodon maunaloaeFamilySymphysanodontidae (Slopefishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length16.0Common length9.0Depth range131–705 m (430–2313 ft)EnvironmentMarine; benthopelagic; depth range 131 - 705 m, usually 150 - 500 mClimateTropicalDistributionPacific Ocean: off Japan and Lombok, Indonesia to the Hawaiian Islands and Sala y G?mez Ridge.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