My betta fish is losing parts of her back tail, and I really need help. I've had her for about a year, and she has started to turn gray on her belly. I have already treated the tank for fin rot, but nothing happened. Is it a bacterial infection?

Updated On September 15th, 2019

Pet's info: Fish | Betta | Female

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Answered By Todd Cecil

Veterinarian

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Thanks for reaching out about M.S. and including photos. Have you tested the water quality for pH, ammonia, nitrites and nitrates? Betta pellets need to be replaced every 3 months as vitamins degrade quickly. Bacterial fin infections are often associated with poor water quality. Rarely do water additive for infection improve the condition so systemic antibiotics might be a better choice. A veterinary visit would be needed to diagnose and prescribe medication. good luck.

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