The crescent-tail wrasse is a brilliant green-blue with an oblong body with a rounded pink head that has irregular blue stripes. Adult males are a greenish-blue with a striking yellow crescent-shaped tail. Females and juveniles have blue bellies and purple vertical stripes on their flanks.
These wrasses are found on coral reefs throughout the Indian and Pacific Oceans.
They stay in small groups, searching for small invertebrates to feed on.