Health & WellnessMy betta fish has swim bladder. What's the best way to treat it?
Swim bladder issues can be caused by bacterial infection or constipation. These reasons can be compounded by poor water quality.
Use a home test kit or submit a sample of water for testing to confirm 0ppm ammonia and nitrites with nitrates at 20 ppm or less. Most pet stores will do this for free or for a small fee. Partial water changes can be done to stabilize chemistry and maintain or improve water quality. Use only aged or conditioned water that is temperature matched to prevent stress or shock. Bettas do best between 78F and 80F.
Once you have pristine water quality, fast him for 3 days. Resume feeding bits of cooked and shelled green peas until defecation and swimming are normal again. If this doesn't help, consider a broad spectrum antibiotic. You can find one in the aquarium section of the local pet store. Look for Furan, Maracyn 1 and 2 or Kanaplex. Follow label directions carefully and remove the carbon filter insert during treatment if indicated.
Updated on September 24th, 2025
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