I have a growing intermedius tad that has been doing very well. This morning he was fine and I just noticed he is having trouble swimming. He can't seem to stay down. He swims downward then floats right back up to the top eventually he gives up and says floating. I read fish often have this problem due poor nutrition or rapid water changes but can recover. I did not change his water and highly doubt it's nutritional. I did try a new food which I'm guessing could have caused it being that it's the only variable that changed from this morning. I have changed the water with previously prepared water at an equal temp to remove the new food. My question is this? Can a swim bladder problem kill a tad or can he too get over it like a fish? Anyone seen this before? And how did it end?