HomeFish encyclopediaRay-finned fishesPerch-like fishRoversRubyfish Rubyfish (Plagiogeneion rubiginosum) Scientific name: Plagiogeneion rubiginosum Hutton, 1875 The Rubyfish (Plagiogeneion rubiginosum) is a marine fish of the family Emmelichthyidae. BiologyDorsal spines: 12; Dorsal soft rays: 10-12; Anal spines: 3; Anal soft rays: 10. Rosy pink in color, brownish dorsally, silvery below; fins red, tips of caudal fin blackish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlagiogeneion rubiginosumFamilyEmmelichthyidae (Rovers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length60.0Depth range50–600 m (164–1969 ft)EnvironmentMarine; bathydemersal; depth range 50 - 600 mClimateDeep-waterDistributionIndo-West Pacific: St. Paul and Amsterdam Islands, Sri Lanka, southern Australia, and New Zealand. Southeast Atlantic: Vema Seamount west of Cape Town and off Algoa Bay.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (tmax=10; K=0.33) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026