The tubelip wrasse (Labrichthys unilineatus) is a species of wrasse native to the Indian Ocean and the western Pacific Ocean. This species occurs in lagoons and on coral reefs at depths from 0 to 20 m (0 to 66 ft). This species grows to 17.5 cm (6.9 in) in total length. It is of minor importance to local commercial fisheries and can be found in the aquarium trade. This species is the only known member of its genus.