Pomacanthidae

Pomacanthidae is a family of marine ray-finned fishes called angelfishes, found mainly on tropical reefs. Its members are noted for compressed bodies and a distinctive spine on each cheek.

Acanthuroidei: Acanthuroidei is a group of percomorph fishes that includes angelfishes, surgeonfishes, and several related families. Pomacanthidae belongs to this broader grouping of reef-associated fishes.
Protogyny: Protogyny is a reproductive pattern in which an individual functions first as female and later as male. Several angelfish species change sex within social groups.
Marine aquarium: A marine aquarium is a controlled display or captive system containing seawater organisms. Bright colors make many Pomacanthidae species popular aquarium fishes.
Emperor angelfish: The emperor angelfish is a large Indo-Pacific reef fish, Pomacanthus imperator, with striking adult and juvenile patterns. Its dramatic age-dependent patterns exemplify angelfish color change.
Preopercle: The preopercle is a bone forming part of the gill cover in bony fishes. The prominent cheek spine of angelfishes arises from the preopercle.
Cleaner fish: Cleaner fish remove parasites and dead tissue from other fishes at dedicated cleaning sites. Some angelfishes visit reef cleaning stations to have ectoparasites removed.
Marine ornamental fish trade: The marine ornamental fish trade collects and sells marine organisms for aquariums. Angelfishes are collected for the aquarium market, raising concerns about harvest and handling.
French angelfish: The French angelfish is a western Atlantic reef fish, Pomacanthus paru, often seen in pairs. It illustrates the family’s Atlantic diversity and pair-associated behavior.
Perciformes: Perciformes is a large order of ray-finned fishes, though modern classifications divide many former members among other orders. Older classifications placed angelfishes among the traditional perch-like fishes.
Herbivory: Herbivory is feeding on plants or algae. Some angelfish species graze algae, while others include substantial animal matter in their diets.

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