All fish / Pomacanthidae
King Angelfish
Holacanthus passer
Also known as king angel, passer angelfish, passer angel, white-banded angelfish, cortez king angelfish, キングエンゼルフィッシュ, 国王神仙, 帝王神仙鱼

Adults are deep blue-grey with a single white vertical bar behind the gills, orange-yellow tail and fine blue edging on the fins, while juveniles are orange and blue with thin pale bars. It is kept for its striking looks, bold character and hardiness once settled in a large tank.
Care at a glance
- Care level
- Moderate
- Temperament
- Aggressive
- Adult size
- 30 cm
- Temperature
- 22 to 27 °C
- pH
- 8.1 to 8.4
- Smallest tank
- 800 litres
- Keep as
- Keep singly
- Diet
- Omnivore: sponge-based angelfish foods, spirulina, mysis, krill and marine algae
- Swims
- Middle of the tank
- Lifespan
- 10 to 15 years
- Water
- Marine (saltwater)
- Wild range
- Eastern Pacific: Gulf of California to Peru, including the Galápagos
Breeding
It is a pelagic egg scatterer that spawns in pairs or harems at dusk in the wild. Captive breeding is rare and essentially limited to commercial or research facilities.
Good to know
Grows large and becomes very territorial, often bullying other angelfish and tankmates, so add it last to a big tank. It will nip corals, clams and sessile invertebrates, so it is not reef safe.