Cuckoo Wrasse

Description

This species is sexually dimorphic. The male normally has a blue head with a blue body and orange pattern and blue tail. During the breeding season. the body colouration gradually changes to an orange head and body with a blue pattern that may be more pronounced at the head. The male can reach 40 cm (16 in) in standard length. The female, however, has an orange head, body, and tail with a black stripe on the dorsal fin broken up by a number of white spots. Females can grow to 30 cm (12 in) in total length.

The female has the ability to change sex when no males are present in the area.

Etymology

The name cuckoo wrasse comes from Cornish fishermen who associated the blue markings with bluebell flowers. In the Cornish language, a bluebell is bleujenn an gog, literally "the cuckoo flower".