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Matthew Jones

Goldfish losing his scales?

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i have 2 goldfish, 1 normal goldfish and 1 lemon goldfish. I have recently got a new 48L aquarium. After a couple of days, my goldfish starting losing his scales and going white. I looked online and it said it might be that he was rubbing on the new decorations. He has since lost most of the scales and is gasping at the surface of the water. I'm quite worried. I have separated him from the other one. Can someone advise what might be wrong and how I best fix it?




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:hi and :welcome

The first problem here is the tank is way to small for even one goldfish. Goldfish need at least 20 gallons per fish and a filtration rate of 10X an hour. :)

It looks and sounds like this fish has flukes.

Have you ever praized these fish?

Please copy & paste fill the following form and fill it out to the best of your ability when requesting help for Goldfish Problems: 

  • Test Results for the Following:
    • * Ammonia Level(Tank)
    • * Nitrite Level(Tank)
    • * Nitrate level(Tank)
    • * Ammonia Level(Tap)
    • * Nitrite Level(Tap)
    • * Nitrate level(Tap)
    • * Ph Level, Tank (If possible, KH, GH and chloramines) 
    • * Ph Level, Tap (If possible, KH, GH and chloramines)
    • Other Required Info:
      • * Brand of test-kit used and whether strips or drops?
      • * Water temperature?
      • * Tank size (how many gals.) and how long has it been running?
      • * What is the name and "size of the filter"(s)?
      • * How often do you change the water and how much?
  • * How many days ago was the last water change and how much did you change?
  • * How many fish in the tank and their size?
  • * What kind of water additives or conditioners?
  • * What do you feed your fish and how often?
  • * Any new fish added to the tank?
  • * Any medications added to the tank?
  • * List entire medication/treatment history for fish and tank.Please include salt, Prazi, PP, etc and the approximate time and duration of treatment.
  • * Any unusual findings on the fish such as "grains of salt," bloody streaks, frayed fins or fungus?
  • * Any unusual behavior like staying at the bottom, not eating, etc.?

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Please read our guidelines for healthy goldfish.   Unless you have been doing large daily water changes, your fish probably suffer from ammonia poisoning, and weakened by that have also been attacked by pathogens and parasites.

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