Aggressive, large, should be reef safe. A beautiful fish. Just be aware that it can easily grow to 15". I can almost say for sure it will be a bully. This is definitely an 'add last fish'.
I ve had two clown tangs one lasted more than a year found him on the carpet one morning
last one I had was hardy, ate well, good demeanor, stopped eating one day, got real skinny within a week and died I had him 8 months.
great looking fish but IMHO tough fish to keep
Edited for the right diet (sorry haven't slept in a few days). Vegie foods, Seaweed and Nori as well as spirulina and other vegi diets. Just an FYI before you by something is the time to research it's temperment and diet as well as growth and final size.