I have had feeder fish in the tank with both my lotls and they have never harmed them. They usually get eaten within a 24 hour span. I don't usually do more than 6, so unless you have a slow moving, or ill axie, as well as 10 or more feeders that are bigger than 2 inches I don't think you should have a problem. I know everyone has different problems with different axies and fish, but I have never had a problem with feeder fish. My local pet store thinks its actually fantastic to keep feeders in with lotls because they suffice as entertainment for them!