I want to get some red bellys but the only size tank I have room to get right now is a 55. A LFS has 2 inchers. How many should I get so as they grow up they will be comforable and not too crowded. But I don't want to have to few of them so they beat each other up or wont they do this. Also what is the best thing to feed them when they are that small to help em grow faster.