Kalmar "genus Acanthurus" tana nufin rukuni na nau'in kifi na ruwa wanda aka fi sani da surgeonfishes, tangs, ko doctorfishes. Wadannan kifayen ana siffanta su da matse jikinsu a gefe, da kananan baki masu kaifi da hakora, da kaifi mai kaifi a kan wutsiyarsu. Ana samun su yawanci a cikin ruwaye masu zafi da na wurare masu zafi kuma an san su da launuka masu haske da nau'ikan nau'ikan su. Sunan "Acanthurus" ya samo asali ne daga kalmomin Helenanci "akantha," ma'ana ƙaya ko kashin baya, da "oura," ma'anar wutsiya, wanda ke nufin kashin baya a kan wutsiyoyinsu.