Only going to use a species only tank, so no worries there. I know some people have had success keeping them and cherries together, but I don't keep any combination tanks anyways. heh
I only have 5 coming in, so we'll see what happens as far as group control goes. I'm told they won't harm the fems, but the males can be territorial depending on personality...again, a lot like CPOs.
Good tip to know to keep the caves separate from each other.