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Amblygobius phalaena, the Sleeper Banded goby, white-barred goby, is a species of goby native to tropical reefs of the western Pacific Ocean and through the central Indo-Pacific area at depths of from 2 to 20 metres.. Unlike many gobies, the Amblygobius spp. spend most of their time hovering in the water column, not in repose on the substrate.