Dave, I also call them wolf packs and anybody who sees them will understand. I once stopped up a creek (didn't work) and added 50 one to two inch LMB and a pound of fatheads. The baby bass immediately cooperated and 'herded' the minnows into a tight ball. Then started taking turns rushing in and picking them off. I don't really understand how the baby bass lived through it. They had fish tails sticking out of their mouths from eating fish almost their size. At one point, I was watching 2 bass that were side by side. All at once, one of them ate the other and had a tail sticking out its mouth. Mean little mothers.