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BiologyInhabits continental and insular shelves; on coral and rocky reefs in sheltered bays and lagoon, patch reefs, with muddy, sandy and silty bottoms or coral rubble, and mangroves (Ref. 54391); typically forming dense aggregations at the entrance of caves (Ref. 1602, 48635) and among branching corals (Ref. 2334). Nocturnal species (Ref. 7300).