I don't know about that, if he got larger bluegill I think they would actually pick on the pbass and LMB. If you got a full grown bluegill in the 10-12" range a LMB would be hard pressed to eat it. Bluegill are very aggresive. Full grown LMB would also be to large for a pbass to eat...it all depends on the size of the fish he gets really. With that in mind, he would need an extreamly large tank to keep all these fish in for life, thousands of gallons I would say.