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My goldfish had explosive poop. Should I be worried? What to do?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish | Male

We have a large 5-year-old goldfish. I was walking by his aquarium (he's in a 20 gallon, but we are almost ready to transfer him to a 55 gallon), and he had an explosive poop! I've never seen him do this. What should I do?

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on August 6th, 2018

Simply monitor him. He may have been constipated and you caught him as he finally defecated. You can fast him 1 day a week and offer cooked and shelled green peas to aid in defecation. Maintain pristine water quality and stable water chemistry.

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