Get convict cichlids, preferably 3 to 6 pairs and set up a breeding or feeding program. Just put 1 pair per 10g and they will do the rest. And when you are raising fry in one tank, feeding your bass with fry from another tank then you have a third tank already breeding. FLAWLESS. Just you need alot of tanks and convicts. And convicts hit the 5-6" mark so you could feed them to your bass for life, with supplumental flake foods of course.
Oh! And you could buy a pair of my shellies here! They also breed like flies!
http://www.aquabid.com/cgi-bin/auction/auction.cgi?fwcichlidst&1261957766