Cortez rainbow wrasse
Thalassoma lucasanum
The Cortez rainbow wrasse is a species of wrasse native to the eastern Pacific Ocean from Baja California to Peru, as well as around the Galapagos Islands. It is a reef inhabitant, occurring in small schools from the surface to depths of 64 m, though rarely deeper than 25 m or shallower than 2 m. It is generally very common.