my females have always done well with any other fish even the ones who are aggressive towards other females. This depends on the female though, some ive heard can be just as aggressive as males, though Ive never had one. You could try it with platys, mollies, cories, wouldnt recommend tetras as they can be skittish though. If you do get other fish make sure you have another home for the fish or female if it doesnt work out. And make sure you cycle.