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My fish has swim bladder infection. How do I treat my sick fish?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish

I do have other fish with the same problem not as bad as the one that passed away think it might be swim bladder infection

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on November 27th, 2018

If you believe it is swim bladder disease, fast them for 3 days. Resume feeding bits of cooked and shelled green peas until swimming and defecation are normal. The peas can relieve constipation which can cause swim bladder issues. You can also consider a broad spectrum antibiotic and/or a broad spectrum dewormer for the tank to cover infection and parasites. Look in the aquarium section of the local Petco for products. Follow label directions carefully and remove the carbon filter insert during treatment if indicated.

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