How long do piranhas live?

Answer 1

Piranhas in captivity have lived more than twenty years, but ten to fifteen can be considered normal in freshwater.
I don't know how long on average wild piranha live, but the world's oldest recorded prianha was kept in an aquarium in Bolton, Lancashire, and lived to be around 40 years old, before it died around 1999. Correction, the piranha died in 2000 and was, sadly, only 24.

Answer 2

I've had a piranha for 8 years now and he still eats as actively as ever. I've also heard that they can live up to 10 years.