Wwll I have been reading up on swim bladder disease and I am unsure of the symptoms. My goldfish that I have had for about a week are constantly and the bottom and middle of the tank. They swim around and seem to swim and float just fine. It is just rarely that thy go to the top of the tank. I have seen them do it sometimes and they do not seem to float down but rather swim down. I am just unsure if this is just typical behavior or if all goldfish have different ways.