just recently my goldfish suffered from what we diagnosed as amonia burning. We have constantly changed the water and so far he's been getting better. However, he seems to be swimming near the top of the tank (he usually likes the bottom more) (he's swimming there so its not an issue with his swim bladder). He's been taking quick breaths cuz his mouth has been opening quickly but he hasnt risen above the water for air. In addition, his fins appear to be falling away (his side fin is just a stik on one side now) Will they grow bak and are they the result of the severe ammonia burning?