4750 Acanthurus blochii Valenciennes, 1835 Acanthuridae Surgeonfishes, tangs, unicornfishes Acanthurinae Acanthuriformes Teleostei Ringtail surgeonfish Indo-Pacific: East Africa, including the Mascarene Islands (Ref. 37792) to the Hawaiian and Society islands, north to Ryukyu Islands, south to Lord Howe Island. FISH 387587 5 S 150 E 1994 Acanthurus blochi