My oldest fish is an H. chrysus that I got in 2001. It was only a couple of inches long, and dived right out of it's holding tank at the LFS and face planted onto the cement while the guy was trying to net it. I bought it anyway. A couple of years later, when I upgraded from my 55 to the 180, I couldn't find it. I assumed it had died, even though I knew they buried themselves in the sand. Just in case, I left the sandbed in the 55 intact with an inch or two of water and hoped for the best. 2 weeks later, it reappeared. In the 180 it has since survived a marine velvet outbreak. It's now about 7 inches with full adult colors. Awesome guy. My other velvet survivor, a black male occellaris, has been with me about 5 years, and has now changed into a female after I got it a buddy. They're hosting a clam, and I'm really hoping they spawn soon!
Big E I would love to see a pic of that 18 year old purple tang! I really want one for my 180.