4738 Acanthurus nigroris Valenciennes, 1835 Acanthuridae Surgeonfishes, tangs, unicornfishes Acanthurinae Acanthuriformes Teleostei Bluelined surgeonfish Indo-Pacific: Aldabra and Seychelles to the Hawaiian, Marquesas and Tuamoto Islands; throughout Micronesia. AMNH 51727 1970 Acanthurus nigroris AMNH 51763 1970 Acanthurus nigroris AMNH 51804 1970 Acanthurus nigroris AMNH 51824 1970 Acanthurus nigroris AMNH 51924 1970 Acanthurus nigroris AMNH 72450 1970 Acanthurus nigroris AMNH 72465 1970 Acanthurus nigroris AMNH 72606 1970 Acanthurus nigroris AMNH 50978 1978 Acanthurus nigroris AMNH 50985 1978 Acanthurus nigroris