Thalassoma unare

Head patterning makes me want to suggest a Thalassoma wrasse

@Swampy I agree - definitely a wrasse, most likely a Thalassoma, but not one I'm familiar with. Possibly a juvenile T. lunare

The patterning on the head suggests either T.quintaquevium or t.cupido.

Based on the pectoral fin, the patterns on the head and the white spots along the dorsum, I'm fairly certain it's T.lunare. Definitely not T.quinquevittatum as they have a pair of horizontal stripes along the body, even in juveniles.

Thanks Hix !