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My goldfish had white spots. How do I keep them healthy long-term?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish | Female | 1 month and 17 days old

Hello sir/madam i have shubunkin goldfish breed it was effected with whitespots now its okay i have changed the water, but what precautions should i take thank you sir/madan

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on September 20th, 2018

Maintaining pristine water quality via filtration and regular partial water changes is the best way to prevent illness. Change no more than 30% of tank volume at a time. Use only conditioned water that is temperature matched to prevent stress or shock. Goldfish are cold water fish and do best between 65 F and 72 F. Confirm the filter is rated for at least twice the volume of the tank. To prevent illness or infection, always quarantine new fish for 2-4 weeks prior to introducing to the main tank. You can use plain aquarium salt (NOT table or Epsom salt) as a general tonic to reduce stress, improve gill function, treat minor infection and aid in recovery when needed. Dissolve 1 tablespoon of salt per 5 gallons of water in a cup or two of tank water and gently pour it into the tank. Treat for no more than 14 days at a time. Perform partial water changes afterwards to decrease salinity.

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