YIKES! I left this common surgeonfish out of Hawaii's Fishes 2nd ed.. Well, these things happen. Here are the two photos plus the writeup that should have gone into the book.

BLUELINE SURGEONFISH maiko Acanthurus nigroris Valenciennes 1835
   These common reef fish vary from light gray to almost black, always with fine, somewhat wavy blue lines running lengthwise along the body. They sometimes display a white ring around the tail. Like the smaller Brown Surgeonfish, they have two small dark spots, above and below the base of the tail. They often join mixed feeding schools of other surgeonfishes. The species name means “blackness.” To 10 in. These fish occur only in the islands of the Pacific from Pitcairn to Micronesia and the Great Barrier Reef. Photos: (top) Honaunau, Hawai`i. 20 ft. (bottom) Hanauma Bay, O`ahu. 5 ft.