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My old Betta fish has white spots and is hiding. How can I treat him?

Updated On September 23rd, 2025

Pet's info: Fish | Betta | Male | unneutered

Hello, my Beta fish has big white spots on his face, its quite old (2 years since we bought it and it was already an adult back then), and its been finding places to lay down and hide in in his tank for the past 5 days or so. We believe its a fungus/bacteria problem, a month ago we put rocks from our garden (cleaned) in the tank. Do you know what the illness is and how to treat him? Weve started by preparing a new, clean aquarium to transfer him. Any medicine prescriptions or other suggestions

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1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on May 1st, 2020

Maintain pristine water quality via filtration and regular partial water changes. Use only conditioned water that is temperature matched to prevent further stress or shock. Bettas do best between 78 F and 80 F. You can try an "all in one" product, such as Lifeguard by Tetra, to treat the condition. Find it in the local Petco or online. Follow label directions carefully and remove the carbon filter insert if indicated. https://www.petco.com/shop/en/petcostore/product/tetra-lifeguard-all-in-one-freshwater-aquarium-treatment

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