That is the same fish that was in the news paper article Tyler, in 1997....I got him March 1994 from ALS aquarium in Windsor. Paid a King's Ransom back then for a purple tang. Good thing the U.S. army had air force bases in Saudi Arabia.

Been in the hobby Daryl, since 1991, started with a 20gal. tank with a power filer and u.g. plates with crushed coral. That purple tang still looks great, a little less ferocious than he used to be. He's definetly the old man in the tank...not as good as he once was, but as good once as he ever was!
My only advice with an achilles is to let the store hold him if possible a few days to a week before you bring him home and move it again, seemed to do mine a world of good, Awesome fish though!