Last year I bought my friends (twin sisters) each a goldfish for their birthday. One is a black moor, double butterfly tail... he's gorgeous, healthy, and growing like mad (they're getting a larger tank this year, before the fish outgrow the 10gal they're in now). The second fish, Wat, unfortunately has... issues... my friend (the second sister) began to notice after a while that he was floating upside down at the top of the tank. We searched the internet, and found that this is a swimbladder problem. The recommended treatment was to soak his food before putting it in the tank, so that he would eat less (sorry I can't site the source of this information, it was a few months ago). She has done this and also kept the tank fanatically clean over the past few months, but Wat's problems have gotten worse. He floats larger and larger percentages of his time. He seems to have trouble swimming for very long at any given time. We think it looks like that particular issue may be caused by his very small caudal fin. Is there anything we can do for him to improve his quality of life? I am certain that he is still able to eat, and Jayne doesn't seem to be picking on him, but this has to be very stressful for him. We know he won't have a very long life, but my friend is still terrified that he is going to die any moment now.