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 Differences from goldfish

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colenz



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PostSubject: Differences from goldfish   Differences from goldfish Icon_minitimeMon Dec 17, 2012 8:07 pm

Goldfish were developed in China more than a thousand years ago by selectively breeding Prussian carp for color mutations. By the Song Dynasty (960 1279), yellow, orange, white, and red-and-white colorations had been developed. Goldfish (Carassius auratus) and Prussian carp (Carassius gibelio) are now considered different species. Goldfish were introduced to Japan in the 16th century and to Europe in the 17th century. Koi, on the other hand, were developed from common carp in Japan in the 1820s. Koi are domesticated common carp (Cyprinus carpio) that are selected or culled for color; they are not a different species, and will revert to the original coloration within a few generations if allowed to breed freely.
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