23375 Acanthurus japonicus (Schmidt, 1931) Acanthuridae Surgeonfishes, tangs, unicornfishes Acanthurinae Acanthuriformes Teleostei Japan surgeonfish Indo-West Pacific: Sulawesi (Indonesia) to Philippines and Ryukyu Islands. 13 N 120 E Acanthurus japonicus 13 N 120 E Acanthurus japonicus 13 N 121 E Acanthurus japonicus 13 N 120 E Acanthurus japonicus 13 N 120 E Acanthurus japonicus AMNH 38108 1978 Acanthurus japonicus