Please help! We recently inherited a carnival goldfish (was not too happy about it) and knowing these poor things are treated horribly I was determined to treat the fish well. Sadly I am not doing so well. I bought him a 6 gal starter aquarium (promising to upgrade when I had the money) The water has been conditioned and tested regularly and seems in good shape but often cloudy. I do a 25% water change and gravel vac weekly. I have recently noticed that the fish was missing scales and the flesh under it bloody. I am assuming he injured himself because it was all of a sudden. I have been adding aquarium salt to the tank and treating him with anti-bacterial food but he doesn't seem to be improving. Now he spends most of his time behind a plant at the bottom of our tank. He swims up to eat but then retreats back to his spot and cont. to do so whenever someone walks by the tank also. This is not his usual behavior. He usual is eager to show off for us and come beg for food. Does he even have a chance? What can I do differently?