I was in the hobby many many years ago but came out of it around the early to mid 90's.
When my second stint started in August 2015 the first fish I bought were a RTGG, 4 balas and 6 clown loach. One Bala and one loach died pretty quick but I still have the rest, so my oldest fish are all around 7 years old.
It's interesting though that if I hadn't have come out of the hobby first time round I often wonder if any of my original clown loach would still be going. They'd be around 27-30 years old now.