The Acanthuridae family contains the fish that are known as Surgeonfish, Tangs,
Unicornfish, and doctorfish.
The name "surgeonfish" is derived from their possessing erectable razor
sharp spines called 'scalpels' at the base of their bodies just in front of the tail fin.
Most varieties of Surgeonfish can be kept together, but sometimes they can be territorial
This family known to have varied colors from brown the colorful powder blue.
Photo by: KAISER_T