Jeff Rotman / Orangespine unicornfish (Naso lituratus) profile portrait, Red Sea, Egypt.

David Fleetham / Orangespine unicornfish (Naso lituratus), female amongst Bigscale soldierfish (Myripristis berndti) school, Hawaii.

Georgette Douwma / RF - Composite image of blue tropical reef fish on a black background, Blue triggerfish (Pseudobalistes fuscus), Elonggate surgeonfish (Acanthurus mata), Yellowtail tang (Zebrasoma xanthurum), Neon da...

Georgette Douwma / Blue tropical reef fish composite image on black background, Blue triggerfish (Pseudobalistes fuscus), Bicolour angelfish (Centropyge bicolor), Elongate surgeonfish (Acanthurus mata), Yellowtail tang...