In a 10gallon? Umm....fry?
You *could* do one of the following in a 10g:
Dwarf Julidochromis
Dwarf Neolamprologus (the "Brichardi-Type" or "fairy cichlids")
HOWEVER, I would still recommend at least a 20g...more room = more active = happier fish = happier owner!
I don't think I'd house any cichlids in anything less than a 29/30g, and even then I'd be sticking with the smaller species, like those mentioned above. A 30g will also open up the doors to a few more options.
Most would require at least a 55, with 75+ being a best choice...so stick with dwarf species in smaller tanks