HomeFish encyclopediaRay-finned fishesPerch-like fishSandperchesBlackflag sandperch Blackflag sandperch (Parapercis signata) Scientific name: Parapercis signata Randall, 1984 The Blackflag sandperch (Parapercis signata) is a marine fish of the family Pinguipedidae. Native range: Western Indian Ocean, known only from Maldives. BiologyFound on rubble bottoms near reefs. Feeds on small invertebrates and fishes. There is an indication that the species is a protogynous hermaphrodite.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParapercis signataFamilyPinguipedidae (Sandperches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length13.0Depth range12 m (39 ft)EnvironmentMarine; reef-associated; depth range 12 - ? m, usually 30 - 35 mClimateTropicalDistributionWestern Indian Ocean: known only from Maldives.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026