Mediterranean rainbow wrasse
In the Mediterranean Sea, the secondary-phase male is green, blue, or brown, with white belly, a dark blue spot over the ventral fin, and a bright orange band on the side, while the smaller primary-phase females and males are brown with yellowish sides and white bellies.
The Mediterranean rainbow wrasse, "Coris julis", is a small, colourful fish in the family Labridae. It can be found in the Mediterranean Sea and in the northeast Atlantic Ocean from Sweden to Senegal. Records of this species south from Senegal and the Cape Verde Islands are actually the closely related "Coris atlantica".