Iniistius dea, also known as the blue-barred or blue-streaked wrasse, is a species of marine fish in the family Labridae. It is found in the Indo-Pacific region, ranging from the Red Sea and East Africa to Samoa and the Great Barrier Reef.
The blue-barred wrasse has a distinctive appearance, with a slender body and elongated, pointed fins. Its body is primarily blue with multiple thin, horizontal, blue bars and a bright yellow tail. Juveniles have a similar appearance but with more pronounced stripes and a black spot at the base of their dorsal fin.
This species is typically found in shallow reef environments and is known to feed on small invertebrates and fish. It is a popular species among hobbyist aquarists due to its striking appearance and active behavior.