I ahve a couple ofBosemani rainbowfish in my tank. I fed them a little bit ago, and sat back down to watch, and one of them is swimming around whith his mouth wide open and his gills flaring. He can colse his mouth..he did a few times, but opens it again. the other one, and the rest of the tank appears fine. There seemed to be some small altercation between 2 of the loaches and the 2 Bosemani's behind a rock over some of the sinking pellets, but didn't seem serious? Any ideas?