I have had more fish than I can count. I would be embarrassed at how many fish I have lost over the years. I bought one fish in 2006. That fish has spent more time in quarantine than any fish should, has survived multiple ick breakouts, and even a marine velvet outbreak. He’s even had HLLE pretty bad, but looks perfect now. But after almost 15 years in my care, my purple tang is still around. That fish is just bullet proof and will survive anything. I don’t know if it is just my particular purple tang or if they are all that hardy. I have heard stories of them living 25 years or more, so here’s hoping mine is around for at least another 10 years.