Hmm...not positive on the sex of the motas, but they do seem to be "acting" like a male/female pair. If they both start laying eggs, then I'll let you guys know.
if you like parachromis check out this thread i posted earlier last year. I have some good pics of them out of the water. As far as feddie vs rtm, I say freddie. More robust, a bit different (rtms very popular right now) and the female during breeding is like a bright bumble bee swimming in your tank