Well it all depends on the size of the fish and the size of the convicts, or on the fish.I had some bad experience with feeding gold fish, lost a couple of rare fish to ick, but there's some fish that only eat live feeders, and there's nothing you can do but feed them live feeders until you wean them off. Convict is not quite a good choice of feeders. Someone here had bad experience with feeding his prize fish with convict, ended up convict killed his prize fish.
I agree with Tom with the gutloaded silver sides, my fish love them.
