Tony Wu / Humphead parrotfish (Bolbometopon muricatum) shoal spawning in early morning, part of mass aggregation of thousands of fish. Caroline Islands, Palau.

Alex Mustard / Male Bullethead parrotfish (Chlorurus sordidus) displaying in late afternoon. Ras Katy, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Jeff Rotman / Close up of mouth of a Stoplight parrotfish (Sparisoma viride) Bahamas, Caribbean

Jeff Rotman / Pectoral fin of a Steepheaded parrotfish (Chlororus gibbus) in the Red Sea, Egypt.

Jeff Rotman / Bullethead parrotfish (Chlororus sordidus) tail. Red Sea, Egypt

Franco Banfi / Bridled parrotfish (Scarus frenatus) clownish grin reveals its power tools: grinding teeth used to scrape algae from rock, Maldives, Indian Ocean. Highly commended in the Underwater World Category of...

Juergen Freund / Detail of eye of Parrotfish (Scarus rivulatus) Komodo NP, Indonesia

Jeff Rotman / Bullethead Parrotfish (Scarus sordidus) portrait at night. Egypt, Red Sea.

Juergen Freund / Close up of eye of Princess parrotfish {Scarus taeniopterus} Caribbean

Juergen Freund / Close up of fin of Parrotfish {Scarus sp} Indo-pacific

Chris Newbert / Parrotfish (Scarus sp) close-up of eye, Red Sea, Egypt

Chris Newbert / Blue Parrotfish (Scarus coeruleus) eye, Belize