study tategoi new additions

Dive into the Study Tategoi for 2020 Part2!

We're excited to offer these tosai (koi less than 1-year old) from famous breeders for 2020. This is a great way to affordably access many different varieties of koi all in one spot. Normally full-grown koi sell for high prices, but with the Study Tategoi program (where koi are randomly selected for you) you can affordably get young koi and watch them grow and develop in your pond.

Great pricing and selections

This year we will be showcasing Study Tategoi in 2 parts—Part 1 for March and Part 2 for April. For March, we're excited to share:

  • Over 800 individual koi
  • 17 tosai varieties to choose
  • 9 excellent koi breeders 

Prices currently range from $49–$99. All are at great prices and randomly selected. These koi will likely sell out fast; so select your favorites!

🚚 Special shipping rates

Buy any Study Tategoi combination of:

  • 1–4 koi to ship for only $69
  • 5 or more koi to ship for FREE

Important: Available to ship as soon as March 23. Please give customer service 1 week in advance notice of your preferred shipping date. You can contact customer service at 808-354-7031 or

Featured koi breeders

We're happy to share Taro Kodama's expertise below about these hard-working breeders. Enjoy!

Mr. Shigeyuki Hoshino

Mr. Shigeyuki Hoshino

Yamaju Koi Farm

He is the creator of Yuki Asagi. Decades ago when he realized how tough the competion was for Gosanke breeding, he decided to swing his farm's future into breeding unique varieties.

Yuki Asagi is one of them. Karasu is another. He is currently breaking the mold with a new variety of dark Kujyaku. Niigata has breeders just like Mr. Hoshino who are pushing forward the potential of Koi.

That is what makes Niigata interesting. Breeders like Mr. Hoshino make Koi even more beautiful.

View the Ginrin Yuki Asagi

Ginrin Yuki(snow) Asagi

Mr. Ryu Mano

Izumiya Koi Farm

Izumiya Koi Farm is one breeder with a long history in Niigata.

It is well-known that Mr. Ichiro Mano, the founder of Izumiya and grandfather of Ryu, was the top Mekiki (keen eye evaluator) of Koi and has dealt with many high qualtity Koi back then.
It is also well-known that Izumiya is synonymous with Ogon. No breeder in Niigata can compete with Izumiya when it comes to Yamabuki Ogon.
Their quality, body conformation, strong yellow shine, and Fukurin (net skin pattern)—every aspect of Izumiya Ogon is top quality.

Izumiya Ogon

Mr. Kazuhiro Hirasawa

Mr. Kazuhiro Hirasawa

Kanno Koi Farm

Talk about Kanno Koi Farm, and Goshiki will automatically come to mind. The mature champion at the last All Japan Koi Show was simply breathtaking.

However, Goshiki is not only what Kanno Koi Farm is proud of. His Kikusui is also jaw-dropping beautiful.

The bright red/orange lays out beautifully over the clean, shiny, pure, white skin. The harmony of the platinum and the red describe them as nothing, but living jewels

View the Kikusui 

Best in Size Prize at 50th All Japan Koi Show
Best in Size Prize at 36th All Japan Young Koi Show

Mr. Katsuyuki Hoshino

Hoshikin Koi Farm

Hoshikin Koi Farm is one of the top Kohaku breeders in Japan.

Because of the simplicity of Kohaku with only 2 colors, breeding high-quality Kohaku is much more challenging than you would imagine.

Mr. Hoshio constantly creates "All Japan Koi Show"-quality Kohaku and attracts Koi lovers from all over the world.

We have not offered Hoshikin's Kohaku tosai for a long time. This is your opportunity.

View the Kohaku


The 43rd Nogyo sai daijin Prize 87cm

Mr. Tsuyoshi Kawakami

Torazo Urakawa Koi Farm

Torazo used to be the top brand and holder of the famous Sanke bloodline. But as Mr. Tsuyoshi Kawakami took over the established koi farm, he gradually started breeding Kohaku.

Nowadays Torazo is a national brand for Kohaku. His Kohaku, that won superior male champion at the last All Japan Koi Show, is still fresh in memory.

We have not offered Torazo's Kohaku tosai for a long time. They are limited. Please do not wait.

View the Kohaku 

2020 All Japan Koi Show Superior Champion

Mr. Hideo Hoshino

Yamanaka Oya Koi Farm

Yamanaka Oya Koi Farm is known as a creator of Aya Wakaba. The base variety of Aya Wakaba is Midorigoi.

Few people breed Midorigoi in Japan. It is plain, but rare and beautiful.

This may be the only chance for you to get Midorigoi this year.

View the Midorigoi

Mr. Hoshino, selecting high quality Midorigoi for us

Mr. Takayoshi Omosako

Mr. Takayoshi Omosako

Omosako Koi Farm

It is not an exaggeration that the last All Japan Koi Show was a show for Omosako Koi Farm. You can take it as granted that their Shiro Utsuri won top awards, but their Kujyaku and Gin Matsuba

also took many koi lovers' breath away. The beauty of the superior champion Kujayku and 80 bu Botan prize winner Gin Matsuba made a huge milestone in the history of Japanese Koi.

Right after the koi show, I begged Mr. Omosako to share some of his Kujyaku and Gin Matsuba for our U.S. customers. We are very fortunate to get the same bloodline Kujayku and Gin Matsuba.


2020 All Japan Koi Show Superior Champion

Black Diamond (or Ginrin Karasu) is another creation of Omosako Koi Farm. Looking at their patterns is like watching stars shining so strong over the sky in the middle of the night. They are amazing beauties.

Kujayku, Gin Matsuba, and Black diamond are all available for our U.S. customers thanks to Omosako Koi Farm, but the supplies are limited. Please do not wait.

View the Kujyaku View the Gin Matsuba View the Black Diamond

2020 All Japan Koi Show  80 bu Botan Prize 

Mr. Masanori Shinoda

Shinoda Koi Farm

We are offering his Ginrin Showa at this Study Tategoi already.

What we are offering here are the jumbo Tosai that I personallly handpicked at his farm.


View  the Ginrin Showa

Grand champion at 39th Nogyosai Koi show

Mr. Kenji Tani

Tani Fish Farm

Based by Narita International Airport, he has been dealing and breeding high-quality Koi that meet the demand of international Koi lovers.

This is our first time to introduce his Koi to our U.S. customers.

What we want for a quality Platinum is the pure and clean platinum color and strong shine.

You would very much enjoy Mr. Tani's Platinum Koi!

View the Platinum 

Mr. Masayuki Sekiguchi

Sekiguchi Koi Farm

Although Sekiguchi Koi Farm is an hour drive away from the center of Ojiya, Koi buyers keep visiting the farm. We are one of the them.

We visit Sekiguchi Koi Farm because of his Showa and Pearl Ginrin.
As evidenced by Grand champion at All Japan Young Koi show, the quality of his Showa is proven. If you still do not have his Showa, it is a must.
Pearl Ginrin is something nobody has in Japan. Just like the name says, his Ginrin shines just like pearls. He recently introuced the Pearl Ginrin to the Benigoi.
And the Pearl Benigoi's pattern is like a series of pearls lining up on beautiful red skin—so gorgeous. Just imagine those living jewels swim in your pond.
Supply is limited. Please get your Showa and Pearl Ginrin Benigoi before others take them.

View the ShowaView the Pearl Ginrin Benigoi

The 32nd All Japan Young Koi Show Grand champion

Mr. Mikinori Kurihara

Kurihara Koi Farm

Founded in 1959

Located in Saitama prefecture between Tokyo and Niigata, Mr. Kurihara breeds wide range of varieties such as
Kohaku, Sanke, Showa, Shiro Utsuri, Kikusui, Yamato Nishiki, Ogon, and Hirenaga.

Enjoy the beauty that is established on the history of over 60 years in the koi industry.


View  the Hirenaga Ogon View  the Hirenaga Platinum

Mr. Omosako from Omosako Koi Farm 

What is the “Study Tategoi” program?

There are many ways to study koi. A lot of videos and articles are available on the Internet. You can have knowledge on the koi variety, breeder, how they may develop, etc.; but you can never get the experience online.

In order to fully understand koi, nothing is better than raising them yourself in your own pond.  Only by raising these koi in your pond, can you see the color, quality, and how they will grow and develop their beauty. As a hobbyist, you want to get this experience with minimal investment.

Study Tategoi program offers this experience at an affordable price. At Study Tategoi program, we select the breeder of a group of fine quality tategoi (future koi). By offering them randomly picked, Kodama Koi Farm can keep the cost low for you; and you get to enjoy a high-demand bloodline with confidence in quality.

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