Red Sea Longnose Filefish

Found in pairs or small schools, in the arms of branching corals, over shallow, coral and rocky fringing reefs, rich in Acropora corals.
They feed exclusively on Acropora polyps.
Western Indian Ocean - Red Sea

Filefish can alter their colour and pattern to match their surrounds and so deter predators.
Although closely related to the Triggerfish, their "trigger spine" cannot be locked into place.