If mollies were the only kind of fish in a 10 gal tank then how many mollies would I be able to keep? It will be converted into a planted tank soon, and after my horrible guppy experiance I am looking in to some mollies instead. All I need is the appropriate numbers. I am interested in teh high fin mollies and the lyre tail mollies if that makes a different. Have never kept mollies before adn don't know how big they get.