HomeFish encyclopediaRay-finned fishesPerch-like fishDamselfishesRegal demoiselle Regal demoiselle (Neopomacentrus cyanomos) Scientific name: Neopomacentrus cyanomos Bleeker, 1856 The Regal demoiselle (Neopomacentrus cyanomos) is a marine fish of the family Pomacentridae. Native range: Indo-West Pacific, Red Sea and East Africa to the Philippines, north to southern Japan, south to northern Australia and Melanesia (except Fiji). BiologyDorsal spines (total): 13; Dorsal soft rays (total): 11-12; Anal spines: 2; Anal soft rays: 11 - 12. Indonesian fish metallic green to black with a distinctive white spot at end on dorsal fin base.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNeopomacentrus cyanomosFamilyPomacentridae (Damselfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range5–30 m (16–98 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 5 - 30 mClimateTropicalDistributionIndo-West Pacific: Red Sea and East Africa to the Philippines, north to southern Japan, south to northern Australia and Melanesia (except Fiji).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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