The magenta lines around the eye of this fish identify it as a supermale stareye parrotfish. Parrotfish have initial and terminal phases. Most adults remain in the initial phase throughout their lives as either males or females, though some parrotfish are all females.
Terminal phase parrotfish are called supermales. These are female initial phase fish which have reversed their sex. They will fertilize most of the eggs laid by initial phase females in their territories. When one of these supermales dies, another initial phase female will reverse sex and take its place.