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My new betta fish isn't eating bloodworms; they just sink. What's wrong?

Updated On September 23rd, 2025

Pet's info: Fish | Betta | Male | 16 days old | 2.5 lbs

I have a better for about 1 month now. I started giving him his food which is the bloodworms. Now he doesn't really eat and leaves the bloodworms sink to the bottom tank. I don't know what to do or what to think?

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1 Answer

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Answered By Todd Cecil

Veterinarian

Published on December 6th, 2019

Thanks for reaching out about Blew and including a photo. Bloodworms are a poor diet for betta fish, lacking vitamins and minerals. Check and correct water quality for pH, ammonia, nitrites and nitrates. Betta fish need to eat a pelleted diet that is fortified in vitamins and minerals. Packets of food should be replaced every 2-3 months as vitamins degrade quickly. If anorexia continues, a veterinary visit is recommended to test for intestinal, gill or skin parasites which can cause anorexia, along with other problems. Good luck.

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