A number of common names are attributed to the species , including regal tang , palette surgeonfish , blue tang ( leading to confusion with the Atlantic Acanthurus coeruleus ) , royal blue tang , hippo tang , flagtail surgeonfish , Pacific regal blue tang and blue surgeonfish .
Other names this species is known by include regal tang , palette surgeonfish , blue tang ( sometimes confused with the Atlantic Acanthurus coeruleus ) , royal blue tang , hippo tang , flagtail surgeonfish , pacific regal blue tang and blue surgeonfish .