I have a 20 Gallon tank (2 ft long) and currently have a pair of German Blue Rams in it. I was wondering what fish should be included with the tank as it looks quite empty with only two GBRs. There's also two african dwarf frogs that don't bother them at all, but I have read that it's a good idea to keep some small schooling fish with rams when you have a smaller like I do. Don't get me wrong, I would love to add some angels or dwarf gouramis but they each get larger than rams do. I'm assuming my best bet is with tetras, but my friend offered me some platies. What is my best option here?