a0761177_and_Treat_Problems____PetSmart__3
[0] Worms [1] Camallanus, Capillaria [2] Red Camallanus worms may protrude from vent (anus); poor growth, weight loss [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. Avoid feeding contaminated live food. [3] 
Add Levamisole to food. Feed an anti-parasite-medicated food.
Diagnosing Fish Ailments: How To Analyze and Treat Problems. | PetSmart
3