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SESK: Stuff Everyone Should Know · sesk.info/fish-goldfish-eat-less-cool-water

How does cooler water change how much a goldfish eats?

It eats less. Cold-blooded fish need less food in cooler water.

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  1. It eats more to stay warm
  2. It eats exactly the same
  3. It eats less ✔

Why: Fish are cold-blooded, so water temperature sets how much food they need. A Texas A&M guide says goldfish eat less in cooler water than in warmer water, so feed less when it is cool.

Huh, didn't know that: The same guide says goldfish feed actively when the water is between 68 and 74 degrees F.

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What do you call two fish on a phone? A net-work.
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References

Answer: It eats less. Fish are cold-blooded, so water temperature sets how much food they need. A Texas A&M guide says goldfish eat less in cooler water than in warmer water, so feed less when it is cool.

  1. Texas A&M AgriLife Extension: Gold Rush, A Kid's Guide to Goldfish Care extension.rwfm.tamu.edu/wp-content/uploads/sites/8/2013/10/Goldrush-%E2%80%93-A-Kid%E2%80%99s-guide-To-Goldfish-Care.pdf
    goldfish will eat less in cooler water than in warmer water.
    Checked 2026-10-11.

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