Can I fit corries in?

[Erised]

At the moment I've got a small 10L tank and a 50L tank (dont ask me how many gal that is, coz I have no idea ). My question would be about the 50L tank, right now I've got 5 neon tetras, 5 black neons, 5 ember tetras, 1 bristlenose pleco and 2 what my boyfriend calls "little suckers". I was wondering if I could fit some corries in here, and if so about how many?

 

[corrosive]

I would probably say no, because corys like to be in groups and i dont think your tank can take many more fish, if any.