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

Tim Fitzharris / Parrotfish (Scaridae), Wrasse (Labridae), and Sergeant Major Damselfish (Abudefduf saxatilis) school, Balicasag Island, Philippines

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

Michael Pitts / Bicolour parrotfish (Cetoscarus bicolor) sleeping at night, Red Sea.

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

Juergen Freund / Sergeant major damselfish (Abudefduf vaigiensis), Parrotfish and Wrasses in the house reef of Miniloc Island Resort, El Nido, Palawan, Philippines. These fish come together densely when bread is throw...

Juergen Freund / Large schooling Bumphead parrotfish (Bolbometopon muricatum) with a passing Hawksbill turtle (Eretmochelys imbricata). Sipadan Island, Sabah, Malaysia

Georgette Douwma / Bumphead parrotfish (Bolbometopon muricatum) Malaysia.