The below profile is on another one of the interesting tangs that I have kept. This information Hippo Tangs is based on what I have learned and observed.
Common Name: Hippo Tang, Regal Tang, Blue Tang, Palette Surgeonfish
Scientific Name: Paracanthurus hepatus
Reef Safe: Yes
Temperament: Peaceful for the most part
Care Level: Moderate
Max Size: 12 inches (9 to 10 inches is more common)