I know this combination has been asked many, many times, but I would just like to know the specifics of different variations of these two. First, my tank will be a heavily planted 55g. Second, I would like to keep A. Cacatuoides. I know the general consensus is that the GBR(s) will be bullied. Does it matter whether the apisto(s) are male or female? I would really like to have a male apisto for the coloring. Does it matter if the apisto is in a pair or not? I am thinking about a trio of apistos and a pair of rams, but I can change this to a pair of apistos and a pair of rams, or just one male, or whatever, but I'd just like to know if pairing off makes a difference in aggression. Finally, does the size of the fish at introduction matter? I can find juvenile GBR's at 1", but have a hard time finding juvenile apistos. This doesn't really help in my situation, but again, just asking for info.