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Koi

life science Maturity 7-9 Next article →

Koi are colorful fish kept for decoration.

Ojiya Nishikigoi no Sato ac (3)
Ojiya Nishikigoi no Sato ac (3)

They are a type of carp. Many people keep them in outdoor ponds.

Long ago, people raised carp mostly for food. In Japan, farmers began to breed them for beauty. This started in the Niigata area during the 1820s.

Rice terraces, Yamakoshi, Niigata
Rice terraces, Yamakoshi, Niigata

Farmers crossed different fish to make new patterns. They made red, white, and black varieties. Some fish have shiny scales. These scales can look like gold or silver.

There are many types of koi. One famous group is called the Gosanke. This group includes three main kinds. These are the Kōhaku, Taishō Sanshoku, and Shōwa Sanshoku.

Sanshoku goi
Sanshoku goi

In the past, people called them by different names. One name was Nishikigoi, which means brocaded carp. This name became popular in the 1910s. Today, people all over the world collect koi. Some very special fish can cost millions of dollars!

It is a fun hobby to watch them swim.

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🖼️ Images & Media (15)
File:Ojiya Nishikigoi no Sato ac (3).jpg
Ojiya Nishikigoi no Sato ac (3).jpg
Koiinapond-swimming-fall-2011.ogv
File:Koi Carp. (16999185026).jpg
Koi Carp. (16999185026).jpg
File:Rice terraces, Yamakoshi, Niigata.jpg
Rice terraces, Yamakoshi, Niigata.jpg
File:Sanshoku goi.jpg
Sanshoku goi.jpg
File:Odd-eyed cat and Koi.jpg
Odd-eyed cat and Koi.jpg
File:Koi pond Hilo Hawaiin Hotel.jpg
Koi pond Hilo Hawaiin Hotel.jpg
File:Cyprinus haematopterus.jpg
Cyprinus haematopterus.jpg
File:Cyprinus melanotus and Cyprinus conirostris.jpg
Cyprinus melanotus and Cyprinus conirostris.jpg
File:Ojiya Nishikigoi no Sato ac (4).jpg
Ojiya Nishikigoi no Sato ac (4).jpg
File:Koi head closeup.jpg
Koi head closeup.jpg
File:Yuyuan Garden.jpg
Yuyuan Garden.jpg

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