HomeMarine aquarium fishOther marine fishDusky batfish Dusky batfish (Platax pinnatus) Scientific name: Platax pinnatus Linnaeus, 1758 The Dusky batfish (Platax pinnatus) is a marine fish of the family Ephippidae. Native range: Western Pacific, Ryukyu Islands to Australia. Occurrence of this species in the Indian Ocean is doubtful. BiologyDorsal spines (total): 5 - 6; Dorsal soft rays (total): 34-37; Anal spines: 3; Anal soft rays: 24 - 28. Juveniles are dark brown to black with a brilliant crimson margin around the entire fish. Adults dull silver with short fins. Body orbicular and strongly compressed, its depth more than twice length of head and 0.9 to 1.3 times in SL. Head length 2.9 to 3.8 times in SL. Large adults (above 35 cm SL) with protruding snout, the front head profile distinctly concave. Interorbital width 34 to 42% head length. Jaws with bands of slender, flattened, tricuspid teeth, the middle cusp about twice length of lateral cusps. Vomer with teeth, but none on palatines. Three or 4 pores on each side of lower jaw. Preopercle smooth. Opercle without spines (Ref 43039).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlatax pinnatusFamilyEphippidae (Spadefishes, batfishes and scats)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length45.0Depth range15–30 m (49–98 ft)EnvironmentMarine; reef-associated; depth range 15 - 30 mClimateTropicalDistributionWestern Pacific: Ryukyu Islands to Australia. Occurrence of this species in the Indian Ocean is doubtful.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More other marine fishLongfin batfishPlatax teiraMoontail bullseyePriacanthus hamrurSilver sweeperPempheris oualensisBrown chubKyphosus bigibbusSmallmouth squirrelfishSargocentron microstomaStriped monocle breamScolopsis lineataSee 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