Alex Mustard / Bumphead parrotfish (Bolbometopon muricatum) gather at dawn on a shallow coral reef. Sipadan Island, Sabah, Borneo, Malaysia. Celebes Sea. Vulnerable species.

Pete Oxford / Stoplight parrotfish (Sparisoma viride) on coral reef, Hol Chan Marine Reserve, Belize.

Georgette Douwma / Greenthroat or Singapore parrotfish (Scarus prasiognathus), large school of terminal males grazing on algae covered coral boulders. Andaman Sea, Thailand.

Georgette Douwma / Greenthroat or Singapore parrotfish (Scarus prasiognathus), grazing on a granite boulder, with a small Remora (Echeneis naucrates) attached. Andaman Sea, Thailand.

Alex Mustard / Portrait of a female Stoplight parrotfish (Sparisoma viride) hovering above a coral reef. Bucaneer Reef, Cayman Brac, Cayman Islands. Caribbean Sea.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride), super male (will always remain male), terminal phase. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride) terminal phase. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride) initial phase. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride) initial phase. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride) initial phase turning into terminal phase. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride), terminal phase, super male. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stoplight parrotfish (Sparisoma viride), terminal phase, grazing on coral rock, shadowed by a Trumpetfish (Aulostomus maculatus) next to a Rocky beauty (Holacanthus tricolor) Bonaire, Netherlands Ant...