Abudefduf sexfasciatus

The scissortail sergeant or striptailed damselfish is a large damselfish in the family Pomacentridae. It earns its name from the black-striped tail and sides, which are reminiscent of the insignia of a military Sergeant, being similar to those of the sergeant major damselfish. It grows to a length of about 16 centimetres (6.3 in). Scissortail sergeants live on coral reefs at depths of up to 15 metres (50 ft) in tropical reaches, often living in a group surrounding a single head of coral. They are found on reefs in the Indo-Pacific region, including the Red Sea.

Wikipedia →