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My betta fish died with a white film and gill tumor. What caused it?

Updated On September 23rd, 2025

Pet's info: Fish | Betta | Male

My betta Koda just passed away this morning on 2-27-20 at 4:30am I think he has slime disease as he has grayish white film on his body do not know if you can see in picture I hadn't noticed it when he was alive but knew he had gill tumor

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1 Answer

Most Helpful Answer

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Answered By Todd Cecil

Veterinarian

Published on February 27th, 2020

Sorry for your loss. I would check water parameters for pH, ammonia, nitrites and nitrates. Sub-standard water quality can result in increased dermal mucous production and the white sheen. Neoplasia can also result in metabolic changes causing skin changes also.

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