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My goldfish is sick: white, cloudy eyes, and mouth open. What to do?

Updated On September 23rd, 2025

Hi my goldfish is going white and got cloudy eyes and the mouth is always open ?? THE OTHER GOLDFISH is ok and water is testing all ok

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on March 29th, 2018

Separate him to a hospital tank in case whatever he has is infectious. This will also make treatment easier. Check parameters again, especially pH. If it is below 6.8 or if ammonia or nitrites are elevated, you will need to perform partial water changes. A broad spectrum antibiotic can be found in the aquarium section of the local Petco. Follow label directions carefully and remove the carbon filter insert during treatment if indicated. This should resolve the cloudy eye.

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