Acanthurus triostegusAlso known as Convict Surgeonfish.
The Convict Tang is a semi-aggressive fish with a white color form, making it an eye-catching addition to your aquarium. With a moderate care level and herbivorous diet, this reef-compatible fish is suitable for tanks of at least 125 gallons. Expertly maintain water conditions of sg 1.020-1.025, 72-78°F, dKH 8-12, and pH 8.1-8.4 for a maximum size of 8 inches.