angelfish: see butterfly fish butterfly fish, common name for certain members of the Chaetodontidae, a family of reef-dwelling tropical fishes that also includes the angelfishes and is closely allied to the spadefishes and the tangs. All have compressed bodies and small mouths and teeth.
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Any of various fishes of the order Perciformes. The best-known angelfishes are freshwater cichlids (genus Pterophyllum) popular in home aquariums. These are thin and deep-bodied fishes that usually are silver with vertical dark markings but may be solid or partially black; they may grow to 6 in. (15 cm) in length. Brightly coloured marine angelfishes are in the family Pomacanthidae. They are found among tropical reefs in the Atlantic and the Indo-Pacific, where they eat algae and marine invertebrates and reach a maximum length of 18 in. (46 cm).
angelfish
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angelfish
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An aquarium angelfish (Pterophyllum)
(credit: Jane Burton—Bruce Coleman Ltd.)
angelfish
1. any of various small tropical marine percoid fishes of the genus Pomacanthus and related genera, which have a deep flattened brightly coloured body and brushlike teeth: family Chaetodontidae
2. a South American cichlid, Pterophyllum scalare, of the Amazon region, having a compressed body and large dorsal and anal fins: a popular aquarium fish
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