I'm planning a very large tank (8x4x21) with a lot of rams and maybe 6 winemilleri geo and was trying to think of another dwarf cichlid to keep in there - at first i thought of apistogramma mac but vaguely i think they are more aggressive and there might be something a bit more colourful but passive to keep with the rams. For upper layers i will have 40 or so cardinals and 40 or so something else - gold tetra maybe or lemon or runnynose. For bottom some l204 and sterbai- though with the geo the sterbai might not be the best idea.