Masked butterfly fish (Chaetodon semilarvatus). These fish, also known as lemon butterfly fish, have flattened bodies and small protruding mouths. Their mouths are able to pick at the small crustaceans, polyps, worms and algae that they eat. Masked butterfly fish live in coral reefs in tropical seas. Photographed off the coast of Egypt, Red Sea.
Model release not required. Property release not required.