Originally Posted by
lion_crazz
Lymph is not a contagious condition.
It is an environmental problem. The causes are usually:
-poor water quality
-poor nutrition
-lack of vitamins
-stray current in the aquarium
If you maintain your tank the right way and feed your fish very well, you have little to nothing to worry about.
Absolutely
Lymphocystis is a viral infection, similar to a person getting a bad cold. If their immune system is high and the tank levels are on then their is little chance that your fish will get lymph.