Study Tategoi Koi

Dive into the Study Tategoi for 2020!

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. Shigeru Mano

Mr. Shigeru Mano

Dainichi Koi Farm

In the Koi world, it is hard to find somebody who does not know the Dainichi name. It is synonym of champion quality Koi. As a matter of fact, he won the grand champion at 2020 All Japan Koi Show, the world's no. 1 Koi show.

Because of the quality and the highest demand for the limited supply, we feel very fortunate to be able to obtain Dainichi Tosai and share them with you.

Dainichi are always the first to get sold out. So please do not wait 'till the last minute.

View the Kohaku View the Showa

Grand champion Kohaku at 51st AJKS (All Japan Koi Show)

Grand champion Showa at 43rd AJKS

Mr. Mitsunori Isa

Mr. Mitsunori Isa

Isa Koi Farm

I must say that Isa Koi Farm and Dainichi are the two most popular breeders in Japan.

Isa's Showa has many features to enjoy, but my favorite quality is their strong bodies. Even males can build such powerful shapes, just like the Kokugyo prize winner.

View the Showa

80 Bu Male Kokugyo (Best in Size) prize

Mr. Hisashi Hirasawa

Mr. Hisashi Hirasawa

Marudo Koi Farm

Being the chairman of All Japan Nishikoigoi Promotion Association, Mr. Hisashi Hirasawa leads breeders in Japan for a brighter future and higher quality Koi for people around the world.

Though he breeds many different varieties, his Kohaku and Sanke are especially popular. Recently he has won several grand champion titles with his Kohaku.

We are very happy to share his Kohaku tosai with you. Please experience and enjoy what his bloodline can do in your pond.

View the Kohaku

Grand champion at Nogyosai 2018

Mr. Takayoshi Omosako

Mr. Takayoshi Omosako

Omosako Koi Farm

There is no question that Omosako Koi Farm is the very best breeder of the Shiro Utsuri variety.

Taking the highest quality as granted, the body of his Shiro Utsuri is very hard to compete with. No Shiro Utsuri from other breeders can have the quality and the size in one. This is why his Shiro Utsuri surpasses everybody else's and always wins at the All Japan Koi Show.

It is very appreciated that Mr. Omosako consistently helps us obtain his valuable tosai and makes them available for you, our clients.

View the Shiro Utsuri

Best in Variety for 46th All Japan Koi Show 85bu

Mr. Kazuhiro Hirasawa

Mr. Kazuhiro Hirasawa

Kanno Koi Farm

Mr. Kazuhiro Hirasawa is one of the young leaders among breeders in Niigata. Goshiki from Kanno Koi Farm are definitely of top quality and highly demanded.

The amazing beauty of Kanno's Goshiki that won the mature champion over Gosanke at the recent All Japan Koi Show is still refreshing!

The tosai available for this study tategoi is from an outstanding female parent. She is 85cm (or 34 inches). She had never been shown at koi shows, but she would definitely have won Best in Variety at the All Japan Koi Show for sure.

Mr. Hirasawa says, "Her body and the high quality and bright beni are the reasons why I picked her for my breeding." We are very fortunate to obtain the first generation siblings of this All Japan class Goshiki. Let's share the dream with Kanno Koi Farm.

Ochibashigure and Ginrin Ochibashigure—these are his new variety additions. Last fall, I saw his 2-year old Ochibashigure. The body and the distinctive coloration were outstanding. I am sure these young siblings will grow big and beautiful.

Kanno's Ochibashigure and Ginrin Ochibashigure are still very new to the market. You should not miss this opportunity.

View the Ginrin Ochibshigure View the Ochibshigure View the Goshiki

Mature Champion at All Japan Koi Show 2020

Mr. Masanori Shinoda

Mr. Masanori Shinoda

Shinoda Koi Farm

Because there are so many Koi varieties and so many breeders in Niigata, no breeder can breed all the varieties that exceed other breeders. To survive the severe competition, they need to specialize in certain varieties. For example, when it comes to Dainichi, we know Kohaku and Showa are excellent. When it comes to Izumiya, he breeds better Ogon than anybody else.

When we talk about Shinoda Koi Farm, Hi Utsuri, Doitsu Showa and Ginrin Showa are the reason to visit.

His Hi Utsuri is especially way better than any others. Just like nobody can touch Omosako's Shiro Utsuri; nobody can touch Shinoda's Hi Utsuri.

We have raised his Hi Utsuri for many years, some of his Koi grows over 24 inches easily in 2 years.

His Ginrin Showa are descendants of the famous one that won grand champion at the 39th Nogyosai Koi show over Gosanke about 16 years ago. Before nor after that Koi, have I seen any other non-Gosanke beat other Gosanke for the title.

View the Doitsu Sanke View the Ginrin Showa View the Hi Utsuri

Grand champion at 39th Nogyosai Koi show

Mr. Takashi Kawakami

Mr. Takashi Kawakami

Kawakami Koi Farm

This almost 100-years old koi farm has bred many quality Koi over 4 generations. His Koi—including Goshiki, Benikumonryu, Heisei Nishiki, Shusui—are always in high demand.

Beni Kumonryu itself is a hard variety to come by. Because of this difficulty, there are not many breeders who breed that variety. Mr. Kawakami is one of the few.

We carefully examined the quality for this event, please enjoy the quality and the dynamic change of his Beni Kumonryu

Heisei Nishiki is metallic Doitsu Sanke. Being metallic, it must shine strong. Being Doitsu, it must have skin as clean as leather. It isn't so easy to have those 2 features in one variety of Sanke. Because of the difficulty, only a few Koi passed our standard for this event. Heisei Nishiki from Kawakami Koi Farm is definitely worth keeping for your pond.

View the Beni Kumonryu View the Heisei Nishiki

Tsubaki prize winner (35 bu) at 47th All Japan Koi Show

Mr. Hironori Hirasawa

Mr. Hironori Hirasawa

Maruhiro Koi Farm

Being a brother of Marusei Koi Farm, it's no wonder that Mr. Hironori Hirasawa likes JUMBO. He loves any Koi that grows big.

When you go to his farm, you can feel his passion. His facility is always full of Koi, especially large ones regardless of the season.

Mukashi Ogon is one of his many specialities. I can say his Koi just grow BIG. Just put his Koi with others in your pond. His Koi will easily outgrow others. It is always fun to watch Koi with big appetite grow big and of course, beautiful.

View the Mukashi Ogon 


Photo of Mr. Yoshikazu Otsuka

Mr. Yoshikazu Otsuka

Otsuka Koi Farm

Mr. Otsuka always has a wide range of unique yet high-quality varieties in stock. Goshiki, Goshiki Sanke, Kage Shiro Utsuri, Aka Matsuba, Shusui, Asagi, etc.

For this Study Tategoi, we are proud to offer beautiful collections of his Shusui, Benigoi, and Aka Matsuba.

View the Shusui View the Benigoi View the Aka Matsuba



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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