Powder Blue Tang

Also known as Surgeonfish, Tangs are generally peaceful and reef-compatible.

Most Tang species grow to be pretty large so a long tank is needed to give them plenty of room to swim.

Tangs are aggressive towards other Tangs so it's best to only keep one species in a tank. They do have a spike on their dorsal fin that they use to protect themselves, but generally speaking they'll remain peaceful with other non-Tang fish.