Suggestions for fish?

[jennarochelle']

you can't add too many more fish, but you could maybe put in some platies or guppies, a different kind of molly?

 

[Mike]

I want to add some more fish to my 64l (14 gal) freshwater tropical tank.
Currently I have:
3 mollies
3 corydoras catfish

I want to add quite a few fish, so they should be small and fairly clean. I am over-filtering so could go over my limit slightly. I want to add a variety, so different types would be good (not just neons!)

Any help appreciated, share your favourites!