My goldfish has turned white. What does that mean?
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These are the main reasons (in order of importance) why your goldfish may have changed color :
Maturing to adulthood,
Diet related,
Amount of sunlight – goldfish in a pond or an aquarium that gets some sunlight will be more brightly colored than goldfish kept in darker conditions,
Poor water quality – you should get a test kit to check your water quality. Make sure that you’re using a suitable aquarium filter and doing enough water changes, as poor quality water can make goldfish color fade,
Illness or disease – again, check your water quality and look for other symptoms of disease (not eating,lethargic, spots and not uniform color).
If your water quality is good and your fish is getting enough sunlight, then don’t worry about any gradual change in your goldfish’s color. Your fish could be changing color for any of the above reasons, or perhaps other reasons, and it’s almost certainly nothing to worry about.
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Gold fish do not technically turn white, but lose color pigmentation when not exposed to enough natural sunlight. The cells responsible for maintaining the bright coloring of goldfish respond to light levels.
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