HomeFish encyclopediaRay-finned fishesPerch-like fishDamselfishesBlacktail chromis Blacktail chromis (Chromis nigrura) Scientific name: Chromis nigrura Smith, 1960 The Blacktail chromis (Chromis nigrura) is a marine fish of the family Pomacentridae. Native range: Indian Ocean, eastern Africa to Sri Lanka and the Maldives; also recorded at Cocos-Keeling and Christmas Island. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 10-11; Anal spines: 2; Anal soft rays: 11Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChromis nigruraFamilyPomacentridae (Damselfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.0Depth range1–30 m (3–98 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 1 - 30 mClimateTropicalDistributionIndian Ocean: eastern Africa to Sri Lanka and the Maldives; also recorded at Cocos-Keeling and Christmas Island.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