04-09-2012, 04:48 PM
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I pulled this off another website, it describes it better than i could. Sometimes, the fish die right away, showing little in the way of symptoms, sometimes the disease progresses through several ugly stages. I listed the first two. NTD can affect other fish, and there is no cure. just watch them carefully.
During the initial stages, the only symptom may be restlessness, particularly at night. Often the first thing an owner will notice is that the affected fish no longer school with the others. Eventually swimming becomes more erratic, and it becomes quite obvious that the fish is not well.
As the disease progresses, affected muscle tissue begins to turn white, generally starting within the color band and areas along the spine. As additional muscle tissue is affected, the pale coloration expands. Damage to the muscles can cause curvature or deformation of the spine, which may cause the fish to have difficulty in swimming. It is not unusual for the body of the fish to have a lumpy appearance as the cysts deform the muscles.