The Blackshoulder Tang Acanthurus nigricaudus
The black shoulder tang grows to 15 inches so the fish will eventually require a very large aquarium. This species is rare and aggressive and intended for the serious hobbyist. The fish will fight other black shoulder tangs but will be compatible with other large species.
Max Size: 1'4"
Require 250+ gallon tank
Medium: 3" to 4"