HomeMarine aquarium fishClownfish & damselfishKing demoiselle King demoiselle (Chrysiptera rex) Scientific name: Chrysiptera rex Snyder, 1909 The King demoiselle (Chrysiptera rex) is a marine fish of the family Pomacentridae. BiologyDorsal spines (total): 13; Dorsal soft rays (total): 13-14; Anal spines: 2; Anal soft rays: 13 - 14. Juveniles bright pink.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChrysiptera rexFamilyPomacentridae (Damselfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.0Depth range1–20 m (3–66 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 1 - 20 mClimateTropicalDistributionIndo-West Pacific: eastern Indian Ocean (Scott and Ashmore Reefs), Ryukyu Islands, Taiwan, Philippines, Palau, Indonesia, New Guinea, New Britain, Solomon Islands, Vanuatu, New Caledonia, and the Great Barrier Reef.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More clownfish & damselfishSurge damselfishChrysiptera brownriggiiOnespot demoiselleChrysiptera unimaculataSapphire devilChrysiptera cyaneaBlueline demoiselleChrysiptera caeruleolineataTwinspot damselfishChrysiptera biocellataYellowbelly damselfishAmblyglyphidodon leucogasterSee all clownfish & damselfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026