This movie shows the species very nicely.  The fish swims so close to the camera it gives us a great view of its fleshy lips, colour pattern on the head and the forehead hump (click on the link to 'Hyperostosis - Swollen Bones' to find out more about this phenomenon).

The Humphead Maori Wrasse (sometimes called the Napoleon Wrasse) is the largest species in the family Labridae, growing to 2.3 m in length and 190 kg.