HomeMarine aquarium fishAngelfish & butterflyfishKing angelfish King angelfish (Holacanthus passer) Scientific name: Holacanthus passer Valenciennes, 1846 The King angelfish (Holacanthus passer) is a marine fish of the family Pomacanthidae. Native range: Eastern Pacific, Gulf of California to Peru, including the Galapagos Islands. BiologyDiurnal grazer on sessile invertebrates and algae but specializes to a larger extent on sponges. Also feeds on plankton. Reproduction occurs in late summer. Females are more territorial and form pair bonds with the males. Oviparous, monogamous. Sometimes forms mixed aggregations with Pomacanthus zonipectus. Cleaning behavior has been observed in juveniles.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHolacanthus passerFamilyPomacanthidae (Angelfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length35.6Common length15.0Depth range4–30 m (13–98 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 4 - 30 mClimateTropicalDistributionEastern Pacific: Gulf of California to Peru, including the Galapagos Islands.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries:; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More angelfish & butterflyfishPajama cardinalfishSphaeramia nematopteraThreebanded butterflyfishChaetodon humeralisCortez angelfishPomacanthus zonipectusSomali butterflyfishChaetodon leucopleuraBrownburnieChaetodon blackburniiBlackwedged butterflyfishChaetodon falculaSee all angelfish & butterflyfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026