My fish has suddenly become swollen in the belly region & looks ill. What could be wrong?
This could be caused by a number of things, such as a swim bladder problem, constipation, or an internal infection. For all cases, you should stop feeding for a day or two, to allow the gut to return to normal. Adding a salt solution such as King British Revitaliser Tonic can help the fish to recover and regain the correct balance of fluids in the body. Internal infections are notoriously difficult to treat without the use of antibiotics. Just make sure that the water quality is pristine, and the dissolved oxygen is high.
