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My goldfish has a white patch on its side. Is it serious? How to treat?

Updated On September 23rd, 2025

Hey so I have have 10 goldfish that are all about 10-20cm long (tail included) in a 6ft tank and Larry which is one of my Fish has a white patch on the side of him could you please tell me what this is and how to tear it please help Me I love him so much.☺️☺️☺️Ps hope you can see the white dot in the photo thank you

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Answered By Todd Cecil

Veterinarian

Published on September 15th, 2019

Thanks for reaching out about Larry and including photos. The white spot appears to be an area that lost a scale, which should grow back. Does not appear infected at present. The tank appears a little green, so test water quality and change as needed. Monitor lighting and how much you feed as that can stimulate algal blooms. Fish should needs to be purchased new every 3 months as vitamins (especially vitamin C) degrade quickly. Good luck.

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