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

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 / Steepheaded parrotfish (Scarus gibbus). Egypt, Red Sea.

Georgette Douwma / Steep headed parrotfish (Scarus gibbus), feeding male followed by a Chequerboard wrasse (Halichoeres hortulanus). Egypt, Red Sea.

Georgette Douwma / Steep headed parrotfish (Scarus gibbus), feeding male followed by a Chequerboard wrasse (Halichoeres hortulanus). Egypt, Red Sea.

Jeff Rotman / Close up of mouth of Steepheaded parrotfish (Scarus gibbus) Red Sea, Egypt

Jeff Rotman / Close up of mouth of Steepheaded parrotfish (Scarus gibbus) Red Sea, Egypt

Jeff Rotman / Male Steepheaded Parrotfish (Scarus gibbus) resting on coral reef, Red Sea.

Jeff Rotman / Male Steepheaded parrotfish (Scarus gibbus) in its intial phase, sleeping in protective mucus membrane at night, Red Sea

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

GEORGETTE DOUWMA / Steepheaded parrotfish (Scarus gibbus) Red Sea, Egypt

Jeff Rotman / Steepheaded parrotfish sleeping (Scarus gibbus) Red Sea, Egypt.