I have a yellow tail damsel that is 10 years old. It has been thru a couple of tank changes and survived a lot.
The craziest thing it survived was the first tank change. I transferred the contents of everything over to the new tank and at the end of the day, the old tank just had a little nasty sludge left in the bottom with maybe a 1/4” of dark brown stinky water left in it. I moved that tank to my garage to clean it up later. The next day, I started to work on cleaning the tank up and when I stuck a cup in to start scooping out the sludge, the damsel suddenly flopped out of the sludge. I had forgotten about it. I grabbed the damsel and threw it in the new tank. It looked awful. It was almost completely white and barely able to swim.
A later it looked healthy and never missed a beat. That was about 8 years ago and it’s still going strong.