Never overfeed, use the Nitrate, Nitrite, Ammonia, pH and Hardness test kits to ensure that water management, and water chemistry are always maintained within optimal limits. In short - keep stress to a minimum so that the time bomb ticks quietly away until your fishes cheat it by dying of old age. Heavily infected fish may appear listless, thin and occasionally behave in an agitated fashion. Reddened areas on the fish body indicate previous points of attachment which are susceptible to secondary fungal infections. Since this medication will kill the leeches but may not affect the eggs a combined therapy should be used.
Fish shows little signs of distress and often continues feeding normally.
Surface appearance of cyst resembles small ball of cauliflower or raspberry. No increase in breathing rate is detectable. Feed as normal. Surgically removed lymphocystis may recur. The Lymphocystis virus is present in almost all bodies of seawater and brackish water, so that any fish which suffer physical damage to body or fins may become infected.