GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Sohal surgeonfish, or sohal tang (Acanthurus sohal). This fish is named for the very sharp 'scalpel' (orange) at the base of its tail, which is used to deter predators. This fish is found on coral reefs from the Red Sea to the Persian Gulf. It feeds on algae from the reef tops and can reach lengths of 40 centimetres. It is highly territorial and will defend its patch of reef vigorously, Photographed in the Red Sea, Egypt.
Model release not required. Property release not required.