any tropical marine spiny-finned fish of the family Acanthuridae, having a compressed brightly coloured body with one or more knifelike spines at the base of the tail
surgeonfish in American English
(ˈsɜrdʒənˌfɪʃ)
US
nounWord forms: pluralˈsurgeonˌfish or ˈsurgeonˌfishes
any of a family (Acanthuridae) of edible, usually brightly colored, tropical percoid sea fishes with one or more movable, lancelike spines on either side of the base of the tail