64 litre

Hi all,   Completely new to the forum and to the hobby. I set up my tank on Saturday and looking forward to getting my first fish soon (my local store recommended starting with Neon Tetras as a first fish).   Of course, at this stage it's all very exciting and I'm getting ahead of myself by...

I only have 2 platys in my tank at the moment and I'm wondering what other fish I would be able to put in without them fighting or overstocking the tank. I have a 64 litre tank, which I know is quite small but would still like to add a few extra fish. Any help would be great! Thanks