Fred Bavendam / Steephead Parrotfish (Scarus microrhinos) portrait, Manado, North Sulawesi, Indonesia

Linda Pitkin / Red Sea steephead parrotfish (Heavybeak parrotfish) Chlorurus gibbus, on coral reef Shark Reef to Jolande, Ras Mohammed National Park, Egypt, Red Sea.

Georgette Douwma / Indian-ocean steephead parrotfish (Chlorurus strongycephalus) female. Andaman Sea, Thailand.

Jeff Rotman / Pectoral fin of Male Steephead Parrotfish (Chlorurus / Scarus microrhinos). Great Barrier Reef, Coral Sea, Australia.

Doug Perrine / Pacific steephead parrotfish {Scarus gibbus} sleeping in mucus cocoon at night, Kimbe Bay, Papua New Guinea

Constantinos Petrinos / Steephead parrotfish sleeping in mucous 'bag' {Scarus gibbus} Red Sea, Egypt

Jeff Rotman / Close-up of Pacific steephead parrotfish eye (Chlorurus / Scarus microrhinos) Great Barrier Reef, Australia

Jeff Rotman / Pacific steephead parrotfish (Chlorurus / Scarus microrhinos) head and mouth close-up. Australia - Great Barrier reef

Jeff Rotman / Pacific steephead parrotfish (Chlorurus / Scarus microrhinos) close-up of skin and fin detail, Australia Great barrier reef

David Fleetham / Steephead Parrotfish (Chlorurus microrhinos) male swimming above reef, Yap, Federated States of Micronesia, Pacific Ocean.

Alex Mustard / Red Sea steephead parrotfish (Chlorurus gibbus) male, portrait, Ras Mohammed National Park, Sinai, Egypt, Red Sea.

Alex Mustard / Two Bluestreak cleaner wrasse (Labroides dimidiatus) attending to a large male Steephead parrotfish (Chlorurus strongylocephalus), Laamu Atoll, Maldives, Indian Ocean.