Originally Posted by King Fisher
You could use a number of schooling fish. Cory cats are good as well. Snails, otocinclus, smaller plecos.
People have had success adding German Blue Rams. Especially in a larger tank such as yours.
Some even mix angelfish with them as they live together in the wild......although there's mixed feelings on this due to aggression from angels during spawning.
I really wanted to add some angles however I am still on the fence because the controversy on the subject. One thing i am baffled is the ability to add cardinals or neon tetras. Wont the discus eat them? I would think they would because they around about snack size for them. Also, what about maybe some denson barbs? Or would they outswim the discus to death? I have seen videos with them in the same tank, however the tank was huge. 220gallons i believe.