want something new

[anniekm5454]

I have a 65 gallon tank. I have a pair of Madagascar rainbows, a pair of boesemanis (pretty small still) a blue rainbow, 2 upside down cats, 2 feather head synodontis, and 3 red honduran ciclids. I would like to try and add a few more fish. Maybe some ciclids of some kind, maybe some different rainbows. I also wonder, can I add any of the barbs to my mix? I've never had ciclids until my friend gave me the Honduran, they are so fun to watch, and so far might chase a little but no deaths or injuries and have had a year or so.
Please give me some advice.