6020 Naso brachycentron (Valenciennes, 1835) Acanthuridae Surgeonfishes, tangs, unicornfishes Nasinae Acanthuriformes Teleostei Humpback unicornfish Indo-Pacific: East Africa to the Marquesan and Society islands, north to the Ryukyu Islands, south to Vanuatu. FB 2739883 Naseus brachycentron FISH 387214 5 S 150 E 1994 Naso brachycentron 15 N 124 E 2014 Naso brachycentron 53.8 m