Fish ID: Blue-lined Surgeonfish

Surgeonfish lined surgeonfish hp
Family Surgeonfish (ACANTHURIDAE)
species Acanthurus lineatus
size Up to 38cm
locality All around the reef
behaviour Solitary (or shoaling if you're lucky)
range Tropical Indian and Pacific Oceans

Distinctive markings: black-edged blue lines over yellow on the upper two thirds of the body, solid pale blue below. Dark blue lunate tail with an inner crescent of paler blue.