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It probably means the fish is badly damaged and is dying. Please do a water change ASAP. Bad water is the commonest cause of death in goldfish. In order to keep fish sucessfully there are a few basic rules one MUST observe. They are :- 1 inch of fish needs at least 1 gallon of water. Every tank must have a permanently running 'cycled' filter. :- Every tank must have at least 50% of its water replaced every week..

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15y ago

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