So I could keep a pair of each in my tank? That would be cool. What about dither I have 2 silver dollars and 2 spotted dollars a salmon tail cat fish and a Feather fin?
Should be able to do two bonded pairs in that tank, maybe with a some male, synspillum, bocourti, midas. Some people have had success with dollars with rt, some not, if there grown out together you will stand a better chance, personally I would try it and get 10+. With enough cover the cats should be alright but might start taking fry.