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In Japan, carp are classified as Koi. The common carp may be the one that's found in most aquacultural settings. Koi fish information indicates that this common carp began being bred for food fish during the 5th century. This took place China. In Japan they began being bred for color in throughout the 1820's. A selection of color patterns transpired and became seen to the exterior. The most notable color was the red and white Kohaku. In 1914 the Nigata Koi appeared within an exposition in Tokyo. The beauty from the fish caused interest to explode throughout the country. It became the most favored "hobby" fish. It eventually spread worldwide and they are now easily obtainable in pet stores. The better type of Koi can be obtained in specialty fish stores or through distributors. Due to extensive hybridization, it is difficult to determine the historical lineage of common carp. It is believed and agreed upon by scientists that you have two subspecies. One is from Western Eurasia along with the other from Eastern Asia. Research of the DNA from the carp demonstrate actually descended from common carp from both regions. Previously research of mitochondrial DNA seemed to indicate that the Koi were descended through the East Asian species. Because from the many hybridization attempts, it is hard to firmly acknowledge either theory. Many varieties There are numerous varieties of Koi. This could be the consequence of continuing experimentation and hybridization. The varieties are distinguished by scalation, patterning and color. The predominant colors of Koi are white, red, black, blue, yellow and cream. The variations go far beyond these listed colors. Breeders have identified some specific areas of labeling. According to current Koi fish information; the Gosanke is the most popular and it is a mixture of Kohauk, Showa Sanshoku and Taisho Sanshoku carp. During the 1980's Ghost Koi appeared. They are one of the most popular in Britain. The Ghost Koi is often a blend of wild carp and also the Ogon Koi. Their metallic scales are incredibly distinguished. Butterfly Koi also made their look within the 80's. They are also called Dragon carp of Longfin Koi. They possess flowing long fins. They are the consequence of hybridization in the Koi and Asian carp. Although popular, Ghost Koi and Butterfly Koi are not regarded as true Nishikigoi. Koi VS Goldfish An interesting piece of Koi Fish information is that Koi differ from Goldfish. The popular Goldfish was created in China over 10 centuries ago. They are the result from the Prussian carp which are bred goldfish food online especially for color mutation. Prussian carp and Goldfish have become different species. Yellow, white, orange and red and white colors were developed through the Song Dynasty. The Goldfish has been around since Japan in the 16th century. Koi fish information shows that the Koi did not appear before 1820's. The Koi can be a domesticated common carp and they are bred for his or her color. If in a position to freely breed, they might revert to original colorations in certain generations. Goldfish are small compared to Koi. They likewise have a greater variety of shapes and tail and fin configurations. Koi have a very common shape and greater range of color patterns.