HomeFish encyclopediaRay-finned fishesPerch-like fishDamselfishesAlexander's damsel Alexander's damsel (Pomacentrus alexanderae) Scientific name: Pomacentrus alexanderae Evermann & Seale, 1907 The Alexander's damsel (Pomacentrus alexanderae) is a marine fish of the family Pomacentridae. Native range: Western Pacific, Indo-Malayan Archipelago east to the Moluccas and Mentawai Islands, north to Taiwan and the Ryukyu Islands. BiologyDorsal spines (total): 13; Dorsal soft rays (total): 14-15; Anal spines: 2; Anal soft rays: 14 - 15. Plain grey with black spot covering the pectoral fin base.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePomacentrus alexanderaeFamilyPomacentridae (Damselfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length9.0Depth range5–60 m (16–197 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 5 - 60 mClimateTropicalDistributionWestern Pacific: Indo-Malayan Archipelago east to the Moluccas and Mentawai Islands, north to Taiwan and the Ryukyu Islands.Conservation status (IUCN)Not EvaluatedThreat 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