life span of fish

I know Paul at Paul's aquatics in Surrey has had tomato clowns in his display for over 13 years 1 died last fall but the other one is fine. He never did find the remains. neon Gobi's only live about 2 years pink dotty backs live a short life I read on on site I'll have to try and find it again as it does give expected lifespan for some fish.

Bill