High Quality Content by WIKIPEDIA articles! The rainbow slender wrasse, Suezichthys arquatus, is a wrasse of the genus Suezichthys, found in New Caledonia, New South Wales in Australia, Norfolk Island, Lord Howe Island, the Kermadec Islands, and the north east coast of New Zealand, in reef areas at depths of between 5 and 100 m. Its length is between 10 and 18 cm.