The dwarf wrasse, Doratonotus megalepis, is a species of wrasse native to tropical waters of the western Atlantic Ocean from Florida, United States, to Brazil and in the eastern Atlantic from around Ile Las Rolas, São Tomé. It is found in beds of turtle grass at depths of 1 to 15 m (3.3 to 49.2 ft), where its green coloration allows it to blend in with its surroundings. This species grows to a total length of 9.4 cm (3.7 in). It can be found in the aquarium trade. This species is the only known member of its genus.