One of mine is 13 years old. (I rescued him and was told he was 10, but from where he came from that could be a lie)
As he's got older it's getting harder for him to eat, due to their deformed mouth, but we've got a system down now where he swims up to me and waits for me to push a stick right in so he can chew with the teeth that are set right back in his mouth, then repeat!
They are so clever and friendly!

