I've been keeping CFB's for a year now, and I've been feeding them exclusively Hikari frozen blood worms. Tonight I was just wasting some time at a Petsmart and was peaking around inside their freezer and started thinking, should I be mixing up their diet at all? Like should I from time to time give them some frozen brine shrimp or anything like that? I remember like a year ago trying to feed reptomin bites or something like that, but they weren't having none of that, I didn't even see them take on bite.