I am not exactly sure, because (beleive it or not) they are not as popular as many other invert pets, so the knowledge of their actual bios is still under reasearch...it has been reported however, of them being kept for nine years. My fave, Minion, died after five years, but she was big when I got her.I wanted to breed them, because they have neen bred in captivity, but it's extremely diffucult to find a male...the girls outnumber the guys 10 to 1!