I actually currently keep a collection of fish that most people tend to think will not work out for the best. Here's a list.
1 Synogonis Catfish
2 Parrot Fish
1 Koi
2 Clown Loaches
1 Malawi Chiclid (not sure of exact name)
1 Black ghost knife
1 Angelicus Botia
1 Electric Yellow chiclid
1 Bumblebee chiclid
2 Albino dojo's
And until recently, 4 neon tetras. I've kept all of these fish in the same aquarium without issue, aside from the neon's being eaten. I like to include a small schooling fish in all of my tanks, which is the reasoning behind wanting something the chiclids tend to not eat.