Pair looks nice. I've heard of keeping them in small shoals too, but I wonder if it'd be better to do a more species setup then. I kind of like the pair idea myself. Had a pair of flames for a while, in those there is a difference in the tail in the amount of blue that's different between M&F, but it doesn't show up until at least 3" or more apparently. Good luck with the pairing, hopefully it works out.
