Hello, I purchased two quite young Apistogramma viejita about 3 months ago. I intended for this to be a future pair but I believe I have ended up with two males. One is much larger than the other, but they both are constantly hiding. There isn't much aggression as the smaller of the two hides far away from the larger, dominant apisto. My question is, how can I encourage at least the larger of the two to not always hide? The only time I see them in the open is when I feed them and I quietly watch from a distance. I thought of maybe the solution of adding dither fish, because the only other fish in the tank are three Otocinclus catfish. The tank is a 10 gallon. All help is welcomed, because I want to see this amazing fish in its true glory, and not hiding in a cave. Thanks ahead of time.