Sorry for the slow reply here regarding the Pencils, but relax dude it's xmas.
Pencil fish are shy, gentle souls with small mouths. That said, they are compatible with just about anything that isn't aggressive. Give them some large leafed plants and they will just flutter about and nibble. NOTE: you will need to watch that they do get food as they will not "fight" for it. These are also smaller fish (the dwarf only get 3/4 inches long) and so might be seen as food for your larger cichlids.