Luiz Rocha
Salty Dog
Here is an interesting one, Centropyge flavissima from Christmas Island:
Note the differences from the normal color morph below, especially the eye:
I am working on their genetics to see if they are really the same species... They have a very disjunct distribution, the "normal" flavissima occurs throughout the South and West Pacific, but is absent from Indonesia and the Philippines and this different morph occurs only in Cocos Keeling and Christmas Island in the Indian Ocean.

Note the differences from the normal color morph below, especially the eye:

I am working on their genetics to see if they are really the same species... They have a very disjunct distribution, the "normal" flavissima occurs throughout the South and West Pacific, but is absent from Indonesia and the Philippines and this different morph occurs only in Cocos Keeling and Christmas Island in the Indian Ocean.