My Kenyi go into the rocks and play hide and seek. It's kinda fun to watch, but then I started to wonder if that was normal. They both (I only have 2 Kenyi, and they're the only onesd that play) hide and peek out, but occaisionally one goes out to find the other, then they case each other around. I just did a water change on sunday, and there is a little bit of ammonia, but only about .15 ppm. Everything else is fine.