This year we celebrate a decade from our groundbreaking here at the Nisei Koi Farm.
During our first decade of breeding, we have bred more Sanke pairings than any other variety and the farm has become known for breeding high class Sanke. This wasn’t a surprise to us because of our close relationship with Mr. Toshio Sakai and access to high class parents from his farm.
Here is a timeline to help catch everyone up on the past ten years of our sanke breeding
Following the Nisei Sanke line
2005 – we first used our Matsunosuke female“rental” Sanke as a parent in breeding.
2006 – Used a Momotaro Sanke female with our Matsunosuke male “rental” sanke for a breeding pair
2007 – Bred again the female rental sanke
2008 – Bred again the female rental sanke
The 2005 spawning produced a koi we refer to as “Fishbach Sanke”. This was the #1 koi from the spawning in terms of parent quality.
The 2006 spawning produced a koi we refer to as “McMahon 3 step Sanke”. This was the #1 koi from the spawning.
The 2007 spawning produced “Hermy”. The #1 koi of the spawning for both parent and show quality.
The 2008 spawning of the female rental sanke gave us a male sanke that exceeded the quality of the Japanese males we have on hand.
2010 was the first year we used American female Koi, bred here at our farm, for parent stock.
The reason – these 3 females produced here on the farm exceeded the quality of the Japanese parent stock we have on hand.
2010 spawning
First sanke used was Hermy. Bred May 29th, she had a successful breeding but being the youngest of the three @ 3 years old she had a small egg mass. This resulted in a low number of sanke produced from the spawning. However, her young are of very high quality and due to the low number of koi in the pond, these koi are Jumbo tosai.

Hermy Female Sanke
The next sanke used for spawning was the 3 step sanke. This spawning failed, as she jumped out of the spawning net in the mud-pond and released her eggs with out males present to fertilize them.
With the unsuccessful spawning of the 3 step sanke, we did a late spawn of the Fishbach sanke to the male produced in 2008. This spawning was a great success. She produced a large number of very high quality koi. With the large numbers of koi produced and spawning late in the year, these koi were harvested between 3-5 inches.

Fishbach Female Sanke
Now that we are at the beginning of 2 new sanke lines, we would like you to join us on the journey of following and learning from these koi.
The best off spring from these spawings were harvested in the fall and brought into our growout greenhouse.
Each group of koi in the grow out greenhouse are being followed on size and quality. The procedure below shows the growing plan for “Group A” , the larger sanke from the Fishbach sanke spawn.
Growing Procedure
Group A is the largest sanke from the spawn of Fishbach sanke
Koi are photographed at about 6 inches. +- ½
The koi weigh average 60 grams – around 1/8 lb
The koi have been placed in grow out in a 1600 gallon system
At the next selection we want the koi to have doubled their weight to a ¼ lb or 125 grams
When the koi are at this weight we want the filter to be able to handle a feeding rate of 3% of the total body weight in the system.
Our loading of the system should not exceed 1 lb of koi per 30gal of culture water(not including filters) being fed at 3% body weight per day.
1600gal system/ 30 gal = 53.33 lb of koi at 1/4lb each at the end of our grow out.
Based on this calculation, we can not exceed 210 koi to start the grow out.
53.33lbs of koi X 3% = 1.6lb of food being fed per day is the max we can feed the koi.

Each group of koi in the grow out will follow the grow out procedure based on their starting size/weight
Usually the best of the best koi from a particular spawn are not normally published when they are tosai. This year we thought we would try something a little different and display all the tategoi from our sanke spawns.
Hermy’s off spring are the first koi for sale. These have been and will continue to be graded during their time on the farm. Some of these koi will be sold and taken home this Spring and Summer; others may remain here over the next few years growing in our mud ponds.
The Fishback sanke will be the next koi up on our website. We are in the process of photographing them.
Follow these koi with us as we watch their progress!