Swimming Ailments...

Is your fish having trouble swimming or does it seem off balance? It's probably suffering from a swimming ailment of some type. Swim ailments can be caused by a number of things. It's a good idea to check pH and Ammonia levels first thing if you see a fish unable to swim properly.

Constipation can also leave a fish unbalanced and bloated. If you think this could be the cause of the problem, feed the fish a diet of live food, or a diet of store bought fish food containing lots of roughag, or "dry foods"

Floating & Sinking Fish (occurs mainly in fancy goldfish)
Treating fish that just can't seem to stay balanced is quite simple. Stop feeding the fish for about a week. If problem does no persist, chances are it was a digestive problem. You must alter the diet with non-dry foods. Dry foods absorb water easily and can cause the fish to float, which can overtime damage the swim bladder, causes the fish to become unable to float. If this happens, you can't reverse the damage, but the fish can still live un a diet of non dry food.