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BiologyAdults inhabit upper edge of outer reef slopes (Ref. 90102), 0-18 m deep (Ref. 529). Found in shallow and protected inshore reefs with sparse coral and rich algae growth (Ref. 48636). Also found in coral reef crevices. They feed on algae and detritus. Usually occur in small loose groups but are shy species and are easily missed by divers that are not on the look-out for blennies (Ref. 48636). Collected from water shallower than 10 m to as great as 18 m in the Ninigo Islands. Oviparous. Eggs are demersal and adhesive (Ref. 205), and are attached to the substrate via a filamentous, adhesive pad or pedestal (Ref. 94114). Larvae are planktonic, often found in shallow, coastal waters (Ref. 94114).