Well guys I have 6 white clouds and one tiger barb (returned my 2nd one) in my 10 gallon tank. It's cycled and has been running smooth for over a month now. I just did a water change, about 50% today, and the fish seem fine. There's one white cloud that is hovering near the top with it's mouth open. I just fed them (flakes) and everyone else seem to be doing fine. What might the problem be?