HomeFish encyclopediaRay-finned fishesPerch-like fishRoversBigscale rubyfish Bigscale rubyfish (Plagiogeneion macrolepis) Scientific name: Plagiogeneion macrolepis McCulloch, 1914 The Bigscale rubyfish (Plagiogeneion macrolepis) is a marine fish of the family Emmelichthyidae. Native range: Eastern Indian Ocean, restricted to Great Australian Bight. BiologyA schooling species occurring on the continental shelf and slope.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlagiogeneion macrolepisFamilyEmmelichthyidae (Rovers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length47.0Depth range95–390 m (312–1280 ft)EnvironmentMarine; demersal; depth range 95 - 390 mClimateTemperateDistributionEastern Indian Ocean: restricted to Great Australian Bight.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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