Sa In 20 Gallon?

[BigAlsTanks]

I haven't done anything yet but I'm just curious if there are any S.A. cichlids that can live in a 20 gallon aquarium? I was thinking something along the likes of Convicts maybe. I mostly into Africans but I've got a 20 gallon and not sure what to do with it. So are there any S.A. that could go into a 20 gallon.

 

[johnboy!]

Microgeophagus
Acara species (smaller types)
Apistogramma
Cupid cichlids
Smaller Geophagus

I'd recommend all of the above (not in the same tank obviously)