Pascal Kobeh / School of Razor surgeonfish (Prionurus laticlavius) Galapagos. Pacific ocean.

Pascal Kobeh / Yellowtail surgeonfish (Prionurus punctatus) grazing algae with a school of Amberstripe scads (Decapterus muroadsi) in background, Baja California peninsula, Mexico. Sea of Cortez.

Georgette Douwma / Yellowtail tang or surgeonfish (Zebrasoma xanthurum) Egypt, Red Sea.

Georgette Douwma / Yellowtail tang or surgeonfish (Zebrasoma xanthurum) Egypt, Red Sea.

Michele Westmorland / Black Striped Salema (Xenocys jessiae) and school of Yellow tail surgeonfish (Prionurus laticlavius) Galapagos Islands..

GEORGETTE DOUWMA / Yellowtail tang / surgeonfish (Zebrasoma xanthururm). Red Sea, Egypt

Joel Sartore / Photo Ark / Yellowtail tang (Zebrasoma xanthurum) portrait, Sharjah Aquarium, UAE. Captive, occurs in north western Indian Ocean.

Tui De Roy / Razor surgeonfish (Prionurus laticlavius) and schooling Blacktip cardinalfish (Apogon atradorsatus) swimming over coral reef with Lobe coral (Porites lobata). Galapagos Islands, Ecuador. Pacific Oce...

Tui De Roy / Razor surgeonfish (Prionurus laticlavius), Blacktip cardinalfish (Apogon atradorsatus) and Black-striped salema (Xenocys jessiae) swimming over coral reef. Galapagos Islands, Ecuador. Pacific Ocean...

Tui De Roy / Razor surgeonfish (Prionurus laticlavius), Flag cabrilla (Epinephelus labriformis) and schooling Pacific creolefish (Paranthias colonus) Galapagos Islands, Ecuador. Pacific Ocean.

Franco Banfi / Yellowtail surgeonfish (Prionurus punctatus) swimming beneath huge shoal of Sardines (Sardina sp.), Espiritu Santo Island, Baja California, Mexico, Sea of Cortez.

Franco Banfi / Yellowtail surgeonfish (Prionurus punctatus) shoal swimming over seabed with Sardine (Sardina sp.) shoal behind, Espiritu Santo Island, Baja California, Mexico, Sea of Cortez.