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Up to 7-8 daysSince goldfish are coldblooded animals they do not burn up energy trying to regulate their body temperature like warmblooded animals do. In this way they don't have to eat as much to survive and function. Although goldfish can usually survive over a week without food it is not very good for them. It is important to feed goldfish regularly and to not overfeed them either.

The above answer is PARTIALLY correct. I've had two goldfish I won at the fair in late august. they've been without food since about August 20, and it is now December. Goldfish can go a VERY long time without food it seems. They're names are Ann and Frank. Either they're miracle fish, or goldfish can simply go months without food. Hope this helps.

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14y ago

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