I had a shared here what happened to my sen who died of a spine curvature... I found this from (http://www.angelfire.com/poetry/canadasangel/FishDiseases.html) and thought some will be interested. It may or may not apply.
"Fish Tuberculosis (QUARANTINE)
Common mostly in Goldfish. The bacteria Mycrobacterium is the cause if this illness. It will infect humans so take precautions when siphoning water. DO NOT SWALLOW! WASH YOUR HANDS VERY WELL!
Symptoms: May show loss of appetite, laziness or listlessness, and loss of colour. When further progressed, fish become emancipated and develop bulging eyes as well as skin defects. Their spines become deformed.
Treatment: Consult your veterinarian. An early stage can be treated with human anti-TB drugs. Once the disease has advanced, medications do not seem to help. Remove dead or dying fish to prevent spread to other inhabitants of the aquarium. Best thing to do is the Humane Disposal of the fish."
"Fish Tuberculosis (QUARANTINE)
Common mostly in Goldfish. The bacteria Mycrobacterium is the cause if this illness. It will infect humans so take precautions when siphoning water. DO NOT SWALLOW! WASH YOUR HANDS VERY WELL!
Symptoms: May show loss of appetite, laziness or listlessness, and loss of colour. When further progressed, fish become emancipated and develop bulging eyes as well as skin defects. Their spines become deformed.
Treatment: Consult your veterinarian. An early stage can be treated with human anti-TB drugs. Once the disease has advanced, medications do not seem to help. Remove dead or dying fish to prevent spread to other inhabitants of the aquarium. Best thing to do is the Humane Disposal of the fish."