Can anyone give me suggestions? I called the pet store and they suggested putting it in a bottle to pressurize it to see if that helps for and hour and it didn't. He also said frozen peas? Should I seperate this fish from my other's? I have two large kissing guamies, 1 rainbow fish, tiger shark and another larger shark that's grey. Tank is 55gal and just added a few pitchers of water a week ago because it was getting a little low. Feeding them dry tropical fish flakes. All levels are in normal range for 55 gal tank.