
Blacklip Butterflyfish - Chaetodon kleinii
The Blacklip Butterflyfish - Chaetodon kleinii is light brown with dirty white head and diffuse central bar, black lip and ventral fins.
One of the more common Butterfly Fish, can be seen in big numbers as in this picture, they were feeding on the eggs by other fishes that were laid on the rock surface.

The Sunburst Butterflyfish, Chaetodon kleinii, is also known as the Black-lipped Butterflyfish (or "blacklip butterflyfish") or Klein's Butterflyfish.
It is a native of the Indo-Pacific region, from the Red Sea and East Africa to the Hawaiian Islands and Samoa, north to southern Japan, south to Australia and New Caledonia. It is also found in Galapagos Islands in the Eastern Pacific.