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Why isn't my new Betta fish eating? Is it stressed in its small tank?

Updated On September 23rd, 2025

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

I got my baby male Betta fish yesterday, I got a few others as well, they are all in the containers they came in seeing as the counter worker told me they could be untill they got bigger, My Male isnt eating the bloodworms in his tank. Im worried, I fed him three times, when I got home from the store, this morning and tonight, there are still pellets in there! Is it caused by stress? How can I save my little Dustin!

1 Answer

Most Helpful Answer

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Answered By Todd Cecil

Veterinarian

Published on November 3rd, 2018

Thanks for reaching out about Dustin. Betta fish can not live in those small containers for elongated periods of time. Small quantities of water are more likely to accumulate toxins such as ammonia. Uneaten food will degrade also into ammonia. Small containers are not stable for temperature change also. The minimal size container for a betta fish is probably 2-3 gallons. Good luck with your fish.

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