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[0] Virus [1] Carp Pox (Cyprinid Herpes Virus 1) [2] Raised, smooth bumps on skin or fins [4] Avoid adding the water from the bag of new fish into your aquarium, and discard the water in the fish bag. Quarantine new fish before adding them to your aquarium in a separate isolation tank. Use anti-bacteria-medicated fish food. [3] 
Affected areas can be treated with topical disinfectants. Add medication containing Formalin to water.
Diagnosing Fish Ailments: How To Analyze and Treat Problems. | PetSmart
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