Koi

Koi are very pretty fish.

They have many bright colors. You can see red, white, and gold. They live in outdoor ponds.

These fish come from carp. Long ago, people kept carp for food. In Japan, farmers began to breed them for color. They wanted fish that looked beautiful.

Farmers crossed different fish to make new patterns. This helped them make many kinds of koi. Some koi even have shiny scales. They can look like gold or silver.

People all over the world love them now. Some koi are very special and cost a lot of money. It is fun to watch them swim!

Koi are colorful fish kept for decoration.

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.

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.

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.

Koi are beautiful, colorful fish kept for decoration.

They are special varieties of carp, which are a type of fish. Many people keep them in outdoor ponds or water gardens.

These fish come in many colors like red, white, and black. Some even have shiny, metallic scales that look like gold or silver.

People love to watch them swim because they are so bright. Keeping koi has become a popular hobby all around the world.

To make these fish, breeders use a way called artificial selection.

This means they choose specific fish to breed together. In the 1800s, farmers in Japan crossed different colored fish. They might cross a red fish with a white fish. This helped them create new patterns and colors. It is a very hard job to do this well. Today, less than 1% of new fish are top-quality colors.

This shows how much work goes into every single fish.

The history of these fish goes back a long time.

Carp were originally used for food in China and Europe. In ancient China, people even called them "horses." They thought these fish could run through the sky. In Japan, fossils show carp lived there thousands of years ago.

Some old books say an Emperor released carp into a pond to watch. For a long time, people only raised them to eat. It took many years to turn them into ornamental fish.

Most modern koi come from the Niigata area in Japan.

Systematic breeding began there in the 1820s. Farmers in the Nijūmuragō area were the first to do this. They raised fish in ponds near their rice paddies. One famous group is called the Gosanke. It includes the Kōhaku, Taishō Sanshoku, and Shōwa Sanshoku varieties.

The name "Nishikigoi" was given to them in the 1910s. This name means "brocaded carp."

You can see how koi are like living art. ]] Just like a painting has many colors, koi have many patterns. Some people collect them just like people collect stamps or coins. Some fish are so special that they cost a lot of money. In 2018, one single carp sold for about $2 million!

Whether they are in a small pond or a big garden, they bring joy. They connect us to ancient traditions and the beauty of nature.

Koi are ornamental varieties of carp, scientifically known as *Cyprinus* species. These fish are kept primarily for decorative purposes in outdoor ponds or water gardens.

While they are part of the larger carp family, koi are distinguished by their unique colors and patterns. They are highly valued by collectors and hobbyists around the world. This passion for koi has turned them into living pieces of art. Many people find peace watching them swim in specialized garden environments.

The process of creating these fish involves a method called artificial selection.

In the early 19th century, breeders began selecting specific fish to reproduce. They would cross different colored varieties to achieve new patterns. For example, breeders in the Nijūmuragō area crossed red and white koi to create new combinations. This is a difficult and precise task. In modern ornamental farming, less than 1% of offspring are considered superior colored fish. This low percentage shows how much effort is required to maintain high standards.

There are many distinct types of koi recognized by breeders. They are often categorized by their coloration, patterning, and the way their scales look.

One of the most famous categories is the Gosanke. This group includes three major varieties: the Kōhaku, the Taishō Sanshoku, and the Shōwa Sanshoku. Other varieties include the Asagi, which has a light blue back, and the Ki Utsuri. Some koi also feature metallic scales, such as gold or silver-white "platinum" scales. These differences allow for a massive range of visual beauty.

The history of carp is very ancient.

Carp are native to Central Europe and Asia. In China, they were originally domesticated for food. Ancient Chinese texts from the 4th century even called them "horses." This was because people believed they could run through the sky. In Japan, fossils of the Cyprinidae family have been found on Iki Island.

Excavations at Lake Biwa show that carp have lived in Japan since the Jomon period, over 11,500 years ago. While some thought carp were only recently introduced from China, DNA analysis shows a native Japanese lineage exists.

Systematic breeding of ornamental carp really took off in the 1820s in Niigata, Japan.

Farmers in the Nijūmuragō area used terraced ponds near their rice paddies to raise them. This happened because they had "hidden" rice fields that helped them avoid taxes. This extra wealth allowed them to pursue koi breeding as a hobby. Around 1875, colored koi became very popular. The name "Nishikigoi," which means "brocaded carp," was not used until the 1910s. Before that, they were often called "spotted carp" or "patterned carp."

Significant milestones helped koi gain global fame. In 1914, the "Koi Exhibit Association" showed varieties at the Tokyo Taishō Exposition.

The fish won a silver medal and were even presented to the Crown Prince. This event caused the market value of koi to soar. In 1917, specific breeds like the Taishō Sanshoku were officially fixed. Another variety, the Shūsui, was created in 1906 by crossing a German leather carp with a Japanese Asagi. This shows how different global lineages can be combined to create new beauty.

Today, koi are a global phenomenon. They are sold in pet shops and through specialist dealers. ]] Collecting koi has become a major social hobby with dedicated clubs. The economic value of these fish can be staggering. In 2018, a single carp was purchased by a Chinese collector for approximately $2 million. This remains the highest price ever paid for a fish. From ancient food sources to multimillion-dollar treasures, koi continue to fascinate the world.