The Thompson’s Surgeonfish (Acanthurus thompsoni) is also known as the Chocolate Surgeonfish, Night Surgeonfish, Thompson's Tang and Whitetail Surgeonfish, They are found in the clear clean waters of Hawaii & the Indo-Pacific.
It is a plankton-eating tang with a uniformly dark brownish-purple body and pale yellow trims highlighting its fins and tail. It is to be noted the Hawaiian fish lack the white tail as is typical when found elsewhere.
The Thompsons Surgeonfish is fairly common in deep water exposed to current and are found schooling in steep outer reef slopes and drop-offs over coral and sand, where it feeds upon zooplankton.
Thompson's Surgeonfish 3-6 cm
Scientific Name Acanthurus thompsoni Origin indo-Pacific, Hawaii Max Size 20 cm Reef Safe Yes Min Tank Size Medium Diet Herbivore Care Level Moderate Temperament Non-Aggressive