Study Tategoi Koi

🚚 Special Shipping Rates On Study Tategoi!

Buy 1 - 4 Koi and Pay $99 For Shipping OR Buy 5 or More and Get Free Shipping!


Important Note: offer cannot be combined with any other koi!

Don't Wait, Last Day To Purchase Study Tategoi Is Wednesday, July 31st! Dive into Study Tategoi Program Today! 


We're excited to offer these tosai (koi less than 1-year old) from famous breeders for 2024. 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.

We are excited to present you with an exclusive offer on our Study Tategoi koi! Buy 10 Study Tategoi koi and receive 1 Karashi koi for free! This is a fantastic opportunity to enhance your pond with our high-quality koi. This special offer is available until July 31, so don’t miss your chance to take advantage of this great deal.

Great Pricing and Selections

This year we will be showcasing:

  • Over 1,000 individual koi left
  • 22 tosai varieties left to choose from
  • 16 excellent koi breeders

Prices currently range from $49–$149. All are at great prices and randomly selected. These koi will likely sell out fast; so select your favorites!

These koi are all pre-selected by Taro Kodama and are top-quality koi, so requesting to select individual koi is not an option.

🚚 Special Shipping Rates

Buy any Study Tategoi combination of:

  • 1–4 koi to ship for only $99
  • 5 or more koi to ship for FREE

Important: Available to ship after March 28th. Please give customer service 2 week in advance notice of your preferred shipping date. You can contact customer service at +1 (833) 546-5683 or

Study Tategoi part 2 of this promotion starts April 1st

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.

Featured Koi Breeders

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

Dainichi Koi Farm

Mr. Shigeru Mano

Mr. Shigeru Mano

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.

Want to learn more about Dainichi Koi Farm? Click here to view our KOI TALK with Dainichi Koi Farm

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

Grand champion Showa at 43rd AJKS

Hiroi Koi Farm

Mr. Kazuyoshi Hiroi and Mr. Nobuaki Hiroi

Hiroi Koi Farm is one of the most established breeders with 80 + years of history in Niigata, Japan. Kazu and Nobu, the twin brothers says "they are very faccinated with the chance Koi can make.

Koi change its body shape, color and pattern as they grow. They have been famous for Doitsu Showa and Ginrin Goshiki.

What amazes us is that he always challenges new varieties and still produce high quality Koi. Producing high level Koi at one variety is hard enough.

The Hiroi twin brothers constantly add new varieties and seems easily breed such high quality ones. Shusui is a relatively new addition to Hiroi Koi Farm. One of varieites is Doitsu Showa, that is what makes Hiroi Koi Farm a must-visit destionation. No other places offer this many and quality Doitsu Showa. Please get at lease one. Or more.

All Japan Young Koi Show Tsubaki Award

Hosokai Koi Farm

Mr. Masaru Hosokai

Kousui is not necessarily a new variety, but for the last few years, Hosokai Koi Farm has produced such high quality Kousui. they are very well received in the Koi hobby world. Kousui is basically a cross of Kohaku and Shusui. On scaless body, you see only red pattern. It sounds very similar to Doitsu Kohaku, but it is not.

The Hi pattern is very different from that of Kohaku. If you remember Shusui, they tends to have Hi pattern on its side. Just like that, Kousui develops Hi from the sides and decorates its body. Few breeders breeds Kousui.

As a matter of fact, I do not know anyone but Mr. Hosokai who breeds this variety So the supply is extremely limitd. We are very happy to offer 40 high qulity Kousui to our customers.


Sakura Prize 65 BU
Mr. Benedict Campos

Hoshikin Koi Farm

Katsuyuki Hoshino

Miyabi prize at 53rd AJKS

Kanno Koi Farm

Mr. Kazuhiro Hirasawa

Mr. Kazuhiro Hirasawa


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!

Want to learn more about Kanno Koi Farm? Click here to view our KOI TALK with Kanno Koi Farm.

Mature Champion at All Japan Koi Show 2020

Nogyosai Special Award Winner

Konishi Koi Farm

Mr. Joji Konishi



Maruhiro Koi Farm

Mr. Hironori Hirasawa

Mr. Hironori Hirasawa


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.

If you can not find what you look for at Maruhiro Koi Farm, chances are that you will not find it any other places. He is one of buyers' first and last stops in Niigata.

If you want a Koi that is high quality and grows big, definitely get his Koi.

Marusaka Koi Farm

Mr. Teruyuki Hiroi

This 70+ year Koi farm started 3 generations ago. Teruchiyo Hiroi, his grandfather, founded the farm.



Marudo Koi Farm

Mr. Hisashi Hirasawa

Mr. Hisashi Hirasawa

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 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.

Grand champion at Nogyosai 2018

Miyatora Koi Farm

Mr. Katsunori Miya

Mr. Miya is a humble, hard working Koi breeder of the established Koi Farm with three generations.


Any Koi from his farm meet the high quality criteria.


We are very happy to offer his fine quality Tosai with our study Tategoi program as the first time.



Otsuka Koi Farm

Photo of Mr. Yoshikazu Otsuka

Mr. Yoshikazu Otsuka


Mr. Yoshikazu Otsuka always have wide range of unique yet high quality varieties in stock such as Goshiki, Goshiki Sanke, Kage shiro Utsuri, Aka Matsuba, Shusui, Asagi etc..


In other words, no breeder in Japan breeds this unique variety. We are very fortunate to have them available for our study Tategoi program.

Oya Koi Farm

Oya Koi Farm breeder

Mr. Taro Kataoka

Taro Kataoka is one of the leading breeders in Japan. His Sanke has won many top awards at All Japan Nishikigoi Show.


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


Kataoka believes HI's impact will increase as the Asagi ages, and you will see more of the red color on its fins.  

Sakai Company Koi Farm

Mr. Yoshimichi Sakai

Sakai Fish Farm is the world renown champion breeder.

There are 2 brothers who really built the foundation of the current farm. They are father and uncle of Mr.Kentaro Sakai, the current owner.

After his father passed away, his uncle, Yoshimichi, started his own Farm, which is the other Sakai, Sakai Company Ltd.

With the experience and the eyes made the world famous breeder, He and his son, Motoharu has been breeding beautiful Gosanke. I do not believe their Koi are not much available in the US yet.

We are very happy to be one of the first to introduce Kohaku from Sakai company.

Shinoda Koi Farm

Mr. Masanori Shinoda

Mr. Masanori Shinoda

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

 His Hi Utsuri is especially second to none. Just like Omosako Shiro Utsuri, no breeder can touch Shinoda’s Hi Utsuri.  His Hi Utsuri is a regular winner of Best in Variety award at All Japan Koi Show. As a matter of fact, he won the title for the last 3 consecutive years.

We also raise his Tosai Hi Utsuri at our farm. This Koi was Tosai in 2018. She is now 24+ inches at our farm. Every Hi Utsuri in this program has the potential

Want to learn more about Shinoda Koi Farm? Click here to view our KOI TALK with Shinoda Koi Farm.

Raised From Tosai At Kodama Koi Farm

Sakazumme Koi Farm

Mr. Shinsaku Sakazumi


Mr. Sakazume thinks Koi breeders must be an artist with breeding skills. Mr. Sakazume definitely fits into the definition of the breeder.

With his pride as an artist and the skill, he became a master of platinum. Platinum are solid color koi belonging to the Hikari Muji group.

Its head should have a strong metallic shine and the pectoral fins and the entire body should shine dazzlingly.

Platinum koi were produced out of Nezu Ogon (a very old variety of grey metallic koi) and Kigoi played in important part in making the other Hikarimoyo.

Yamaju Koi Farm

Mr. Shigeyuki Hoshino


All 2024 Study Tategoi Koi Available Below!

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Let us know more about what you are searching for and we will look into our inventory to help you find the perfect koi. Tell us a description, variety, size range, and price range you are searching for.

We have a large stock of koi that are not listed on our website and we can also look when we are visiting Niigata, Japan. Complete this form and we will follow up with you directly.


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