I have a group of 10 CL's in with my big dat rangin from 4-8" and they do fine, but my dat hasn't seen live food for like 3years. And a loach once tried to go for one of the megafish nls pellets and my dat sucked him in... Then immediately spit him back out and didnt eat for a few days. I now feed my loaches first, and a different pellet so they airnt in the way.