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[0] Bacteria [1] Aeromonas, Pseudomonas [2] Fin and tail rot, skin ulcers, swollen abdomen (dropsy), bulging eyes (pop-eye), reddened fins and skin [4] Maintain good aquarium water quality. Quarantine any fish that show signs of the disease. [3] 
Isolate fish. Add antibiotics to the water and use antibiotic- medicated food.
Diagnosing Fish Ailments: How To Analyze and Treat Problems. | PetSmart
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