Melas (Keyhole) Angelfish - Centropyge tibicen

Keyhole Angelfish - Centropyge tibicen

The Keyhole Angelfish, often overlooked for its simple appearance, thrives in larger marine aquariums where it consumes filamentous algae and diatoms growing on rocks and decorations. It is one of the largest Centropyge species, reaching up to 7.5 inches, and can become aggressive towards other pygmy angelfish if not introduced properly. It thrives in aquariums with live rock for filtration and decoration, though it may occasionally nip at stony and soft corals and clam mantles. Interestingly, it can also live harmoniously in fully reef tanks for extended periods, though vigilance is needed around corals.\n\n

Diet of the Keyhole Angelfish

  In the wild, the Keyhole Angelfish has a diverse diet including crustaceans and algae. It is not considered reef-safe due to its tendency to bother large-polyped stony corals, Zoanthids, soft corals, and clam mantles. While some specimens adapt well and peacefully coexist in reef aquariums, others may change behavior unpredictably with age. This shift is common among Centropyge species, which typically transition from plankton-eaters as juveniles to their adult diet. Feeding should include mysis shrimp, frozen fleshy crustaceans, and algae like Spirulina to ensure nutritional balance.        

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