Why do goldfish lose their color?

Answer

Goldfish normally lose their colour because of the change of the environment, the temperature of water and the introduction of other fish or goldfish into the aquarium. In addition, they can change their colour when they grow old.
Q&A Related to "Why do goldfish lose their color?"
According to the Goldfish and Aquarium Board, biologists identify two types of color change in fish: physiological and morphological. Physiological change occurs when certain organelles
http://www.ehow.com/about_6701131_do-change-color-...
Goldfish need light/vitamin D to use the color pigmentation cells in their scales. Without light, the cells cease and the fish begins to lose it's color. That is what causes it to
http://wiki.answers.com/Q/Why_do_goldfish_lose_the...
Goldfish will lose their color if they are kept in dim
http://www.chacha.com/question/why-do-goldfish-los...
Check this website out: http://pets.families.com/blog/why-is-my-goldfish-changing-colors. It has a few different possibilities as to why your goldfish is changing colors.
http://answers.yahoo.com/question/index?qid=200912...
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