^ 5 years give or take a month. (I said 6 but my math is off it's 5 years old) I got them the Male and Female from a LFS as a pair at about 4'' WC Purivian Mono's. They were my second purchase the other Mono which I believe is a pretty mutt was one of the four in my first purchase of Cichla ever and I haven't looked back since.