Rock Beauty (Holacanthus tricolor)
Family: Pomacanthidae (Angelfishes)
Natural Range: Gulf of Mexico
Depth: 10 to 301 ft. Size: 7.5 in. Jumps: No Space: 75+ gal.
Reef Safe: No Care Level: Easy Temperament: Aggressive
Diet: Sponges, algae, zooanthids
Natural History: The Rock Beauty is most common on deep reef slopes and dropoffs. It is reclusive and observed to spend most of its daylight hours in recesses, holes, and crevices. This species feeds largely on sponges, but also feeds on fish slime, coral polyps, and algae. Eel slime may be an important nutrient for this species. Males are larger than females and females can change into males. Both are territorial on the reef face.
Husbandry: The Rock Beauty will feed on a variety of aquarium foods but it is recommended to provide a varied diet. Specially formulated angelfish foods are recommended, because they will contain the sponge materials that the Rock Beauty needs. They also feed on the slime of other fishes and so may pick at other species. They are particularly aggressive and care must be taken in species selection for aquariums with this fish. They generally ignore smaller bottom-dwelling fishes.
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