I kept a school of White Clouds (6) in with my breeding pair. One day I noticed an Occie fry sticking out of the mouth of one of the WCMM. I immediately removed the WCMM because I was trying to raise the fry at the time.
I've heard of some people keeping Zebra Danios with them, but I personally have not. I would assume the Danios got quite fat, as they are much faster eaters than Occies.
Are you going to try to plant the tank?