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BiologyInhabit sheltered rocky reefs (Ref. 559). Adults are usually with sponges (Ref. 48635). Juveniles openly on reefs looking like nudibranchs (Ref. 48635). Feeds on fishes (Ref. 89972). Oviparous. Eggs are bound in ribbon-like sheath or mass of gelatinous mucus called 'egg raft' or 'veil' (Ref. 6773). Solitary, frequently among algae, sponges and soft corals (Ref 90102).