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My goldfish has a red spot. Is it red patch disease? How to treat?

Updated On September 23rd, 2025

Pet's info: Fish | Gold Fish | Male | 3 months and 17 days old

This red spot is getting worse ive monitored the ph and ammonia is it red patch disease what should i do? Treatments!?

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1 Answer

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Answered By Todd Cecil

Veterinarian

Published on December 28th, 2019

Thanks for reaching out about your fish. Red spot disease is a fungal infection and usually appear fluffy. Adding anti-fungal medication to the tank is not recommended as these can often cause more problems. A veterinary visit is recommended to assess. If you only have goldfish, no live plants, no invertebrates, you can try adding aquariums salt (not table salt) to the tank at 1 Tablespoon per 5 gallons, once daily for 3 consecutive days to slowly raise the salt concentration. Monitor appetite. If fish seem stressed, perform a partial water change. Good luck.

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