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Old 10-07-2006   #41 (permalink)
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Ahh the males do not pass sumi...ops. but I guess I am learning quick.

I dont understand how one creates kohaku with better Beni and Shiroji.
If the Male passes the beni and Shiroji, would one use the female for the size, maybe the female containing Magoi blood??? That would make sense, the females Size to Egg ratio only gets better with size.
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Old 10-07-2006   #42 (permalink)
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Originally Posted by lilhelper View Post
Ahh the males do not pass sumi...ops. but I guess I am learning quick.

I dont understand how one creates kohaku with better Beni and Shiroji.
If the Male passes the beni and Shiroji, would one use the female for the size, maybe the female containing Magoi blood??? That would make sense, the females Size to Egg ratio only gets better with size.

Keep it simple, study Kohak first...Sanke and Showa are just as hard...Once you understand Kohak(simple but complex 2 color fish) then move on to the other fish of the GoSanke.
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Old 10-07-2006   #43 (permalink)
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Keep it simple, study Kohak first...Sanke and Showa are just as hard...Once you understand Kohak(simple but complex 2 color fish) then move on to the other fish of the GoSanke.
that is where I am starting, and if the Proverb is correct, that is where I am going to end....
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Old 10-07-2006   #44 (permalink)
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Good posts all
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Old 10-07-2006   #45 (permalink)
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Im going to study the information you gave me. Then I will discuss more on monday, or maybe a little more today.
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Old 10-07-2006   #46 (permalink)
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Ok… I have a few minutes….You have described your water change regimen, and a little more, but please indulge me as we narrow the focus a moment…You still haven't clarified, in my mind, what perfect, or even very very good water is, to you. As I have mentioned before, Keeping and appreciating koi can be a sliding scale for "us", the hopelessly afflicted. All parts of it. What used to be a mind bending kohaku a few years ago, maybe now you wouldn't look twice at. Same with many aspects of koi, water quality included. And while water quality absolutely counts big, it is not everything. My friend Steve Childers likes to say "It is a system". There are certainly parameters that are consistent in what some learned people would consider as great or "ideal" ponds and are also measurable. What are your parameters? Of the water itself, but also what are the pond and filtration like? These things are not unrelated. pH, GH, O2 level, etc etc. An interesting, but potentially important thing to include are the same values of your incoming makeup water and after it sits for one day. B4 adding it to your pond. You may, or may not, be surprised by what that tells you. A general description will suffice, but the addition of pictures would be even better. Also, how long your pond has been running, and what koi you have in it… sizes, ages, breeders, source, etc. What “types” have done the best in your pond… You will see the point of my questions later…Wax on, Wax Off Grasshoppa…

And now, for your first lesson in Kohaku…..(Insert at this point a picture of Bob in a Dunce cap rapping the chalkboard ) Here are a series of posts gleaned from the NI BBS by some people I hold in high esteem for their koi knowledge and more in the koi world… Jim Reilly, Ray Jordan, and "the Great One" Peter Waddington. I use the word "gleaned" as that describes my feeling of mining the "gems" from their posts...And they are not all evident at the first reading, as you might imagine. I hope they will not mind me reposting this.

kohaku lines- an early history
Posted by James P on 10/14/2005, 2:44 am
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An Interesting time line for kohaku kichi among us—

1804- 1829- ( Bunka and Bunsei periods) the first red and white koi were produced from a mutation of a black carp. It produced the Hookazuki (a koi with red cheeks). During this period white koi were crossed with hookazuki and higoi to produce Hara Aka ( red bellied koi). Around this same time the Hoo Aka and Era Hi were also produced (white koi with red cheeks).
1830- 1843 ( Tenpo period) produced the menkaburi type ( red headed white koi) and the Zukinkaburin type ( red forehead). Additionally, the kuchibeni type ( red lips) and the Sarasa type ( red spots on back) appeared.
By the 1880s kohaku-like fish were being bred regularly in Yamakoshi and improvement was steady. In 1888 a man by the name of Gosuke ( Kunizo Hiroi) crossed a Hachi Hi type with a Sakura Kana type ( cherry blossom pattern) and these offspring and their future generations are considered to be the beginning of modern kohaku.
If fact, these fish became the foundation stock or contributing stock for Tomoin, Buketa, yagozen and Monjiro lines.
As Paul Harvey would say “ now you know, the rest of the story”

Interesting..........but.................
Posted by Waddy on 10/14/2005, 11:17 am, in reply to "kohaku lines- an early history"
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In 1888 Gosuke did produce Kohaku which later went on to be used as parent Koi for the lines mentioned. However some 51 years later along came World War 2 when all able-bodied Japanese males were conscripted to fight for their country. Knowing well, the winter climate in Yamakoshi area I find it hard to believe that the women or old folk remaining in the area could have kept any parent stocks alive for them to be used again after the menfolk had returned from battle.
After having conversed with many Japanese breeders on this subject they all tend to agree that today's bloodlines of Kohaku (and all other varieties for that matter) originated from those produced after 1945.
Looking back to my first visit to the area in 1977 I do remember being astonished at the fantastic quality and size of the stocks on display at most of the outlets but, on reflection, that was only because of the very low quality of the junk Koi which were available at very few outlets in the UK at that time.
If I compare the quality of the stocks produced in 1977 with the quality of the stocks produced today then the 1977 Japanese stocks would have to be classed as junk! And that is only as recently as 28 years ago.
Returning again to the pre-war years it also has to be remembered that all mud ponds had to be manually excavated by shovel; the outdoor concrete holding ponds were tiny; there was no filtration - just a trickle of water feeding and overflowing these concrete tanks; there was no formalin, malachite green or potassium permanganate; aeration was unheard of and any movement of Koi was by wooden bowl. Most importantly there were no indoor heated facilities whereby Koi could safely spend the time sheltering from the harsh, outdoor winter months. Even as recently as the early 1980's many thousands of Koi were lost due to the harshness of the Niigata winters - in those days 11 month-old tosai were lucky to be 3" long - nowadays it is common to see these at 10" long!
It is true that the masters of the 19th. Century did prove that coloured carp could be produced and these same masters gave momentum to other, younger masters to continue with their discoveries. However, I would seriously doubt that any Koi produced today could be traced back to any lineage produced before the late 1940's.
Excuse me for repeating myself again but the humble vinyl bag invented in the early 1960's brought volume Nishikigoi to the Japanese public and it was about this time that many mountain rice farmers decided to become Koi breeders instead - Marusyo; Shintaro; Marusada; Kazuto; Yagenji; Seitaro etc. etc.
In truth, producing Nishikigoi is a relatively modern business!

Re: Interesting..........but.................
Posted by James P on 10/14/2005, 12:16 pm, in reply to "Interesting..........but................."
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Great post Waddy and wonderful to see you have come out of retirement to treat us to some of the great one's insights and observations! Pure gems!But Waddy, the folks in 1945 had to get their breeding stock from somewhere! I mean, they needed a male and female if I understand my high school biology and my grammar school yard talks? There were many breeding red and white fish before the war in the Niigata pref. so I would assume they started from a practical point???
By the way, here's a picture of the winning kohaku at the first ALL Japan Show ( fall of 1969). I'll give you $150 for HIM! LOLs
Welcome back Peter
JR










The post-war years
Posted by Waddy on 10/14/2005, 1:59 pm, in reply to "Re: Interesting..........but................."
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Straight after World War 2 the carp farmers of Yamakoshi continued to breed Magoi for food purposes some also experimented in producing coloured carp (Hirogoi). The Magoi were harvested from the reservoirs that fed the rice paddies when they were 3"-4" long (6 months old) - they were then preserved in salt and sold locally. This provided the locals with a winter supply of fish to eat at a time of the year when the depth of snow prevented journeys to the coast to purchase fresh fish. Any coloured carp produced were kept by the farmers but were not eaten.
Food fish dealers from other areas of Japan heard of the salted Magoi from Yamakoshi and made regular visits in order to purchase surplus production for sale in their stores. During their visits to the area they also saw coloured carp at some outlets. Some of these food fish dealers decided to purchase some coloured carp and transported them in their trucks inside wooden bowls back to their premises and offered them for sale as a new addition to those with existing garden goldfish ponds. In those days coloured carp were priced by size only - variety, sex and quality did not matter.
It took several years before these coloured carp became well known to 'those-in-the-know' in many areas of Japan and in this time the Yamakoshi breeders had realised that there was more profit to be had by producing Hirogoi rather than Magoi. Even by the mid-1950's few Japanese had seen Hirogoi until the food fish dealers started to promote them in their own areas. (Megumi Yoshida's father was responsible in promoting them in Tokyo and Konishi was responsible in promoting them in Hiroshima.)
What happened next was an explosion of people in many other areas of Japan who wished to become breeders of Hirogoi and soon these newcomers started making regular visits to Yamakoshi in order to find suitable parent stocks. At first transportation was by train using leaking wooden containers which had to be topped-up at every stop - many Hirogoi were lost initially but some made it to their final destinations. As soon as the vinyl bag/pure oxygen method was discovered it became possible to transport live Hirogoi to any part of Japan.
In the early 1960's Uedera in Hiroshima purchased Niigata 'Dia' parent stocks (those with random reflective scales) and went on to succesfully produce the first true Gin Rin Koi. Also in this time Hiroji Sakai (Hiroshima) was one of Yamamatsu's best customers! The 1960's was a decade whereby breeders and brokers from all parts of Japan visited Yamakoshi during the October harvest periods in order to buy parent stocks from the mountainside breeders. Soon 'Nishikigoi' - (Don't know exactly when this term was first used) farms were set up in many other areas of Japan - Kyushu; Hiroshima; Shikoku; Gifu; Isawa; Nagoya; Kyoto - the list goes on.
Even in the 1970's including my first trip in '77 many Yamakoshi breeders gave 'first pick of their harvest' to a certain 'good broker/breeder' customer whereas today it's more of a 'first come, first served' basis.
Even if the subject of bloodlines and breeders is enshrouded in the mists of time one thing remains a fact and that is despite the areas of Japan producing Nishikigoi today ALL the parents originated in Yamakoshi, Niigata.
And Jim, it is said that a Mr. Satoru Hoshino in Ojiya City still has male & female Gosuke Kohaku.................but......do we really know if this is the truth?
Waddy.

Re: Interesting..........but.................
Posted by Ray Jordan on 10/14/2005, 1:16 pm, in reply to "Re: Interesting..........but................."
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During WWII the Japanese Army ordered all colored carp be turned over to them to help feed the troops. Some parent stocks were instead taken to shinto shrines in the area and turned over to the shinto priests to protect in temple ponds. Some of the shinto priests were also koi hobbyists and even koi breeders. After the war some of these koi were quietly reclaimed from the shinto temples and koi breeding began again.
The early red & white colored carp referred to by JR were the orginal genetic pool that modern koi sprang from. Brady refers to only 4-5 generations necessary to progress from a magoi X Modern Koi crossing to show quality specimens. This rapid progress is possible because the % of modern koi genes occurs from only the orginal cross being magoi. i.e, Magoi X Koi = 50% magoi then offspring X koi = 25% magoi etc. by 5th generation only about 3% magoi genes remaining because modern koi are crossed with each generation of hybrid magoi X Koi. This is quite differnt than starting with two magoi parents and progressing to modern koi genetics.
1st All Japan Show GC was owned by Mits Nakamura who lived in Hawaii and shiped his koi back to Japan for the 1st AJS.
Additional Note: Just learned that a old home movie film exists of the 1st All Japan Show taken by Mits. Bob Finnegan is working to have it restored and coverted to DVD. Would love to see if it can be restored.

Re: Interesting..........but.................
Posted by Ray Jordan on 10/14/2005, 8:51 pm, in reply to "Re: Interesting..........but................."
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I asked Megumi Yoshida to assist me with a lot of my koi history research and he asked some of the oldest koi breeders still alive in the Niigata area a long list of questions.
Megumi indicated that the elders did not like to talk about the war because it was such a difficult time for all. It was difficult to get anyone to admit to not obeying a order from the army which carried the authority of the emperior.
I get the feeling a lot of the elder koi breeders were some pretty colorful rascals. I mean no disrespect in saying this at all. I admire their creativity, boldness and business accumen. As you know the selling of colored carp was banned for awhile in the early 1900's because of the huge prices some of these early breakthrough colored carp commanded and some disputes that resulted.
Colored Carp farmers came to Ojita town after harvest with their pockets stuffed with money and they had some pretty grand parties I am told. I would have loved to been there.


some interesting follow up trivia
Posted by James P on 10/15/2005, 9:22 am, in reply to "Great info!"
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Takeshi Seki was 104 years old at the time of the interview---
Seki says that the people of yamakoshi village were primarily rice farmes but many dabbled in koi breeding and brokering for at least four generations. If you had water- you had koi he said. If you were near the river or a river passed by your house, you kept koi in it. A family could not save face without keeping koi according to the old man.
Goroji Sato was 98 years old at the time of the interview----
he sold his first koi at age 13. He has been trading koi since the 1920s. many of his customers were in Hiroshima and he sent many fish to that region right after the war.
Jirosuke kawakami ( 84 years old) is a third generation koi broker and breeder. He recalls 'koi union' meetings at the local school during the Taisho era. He also sold many koi to the breeders and growers in Hiroshima in the early 1940s. He says " he sold many fish to the Hiroshima breeders but once the war broke out, there was no more business. He had fish in the ponds but no customers/business"

Best story of all----
Kawakami San was active in the very early village koi shows. Two or three villages would get together and put on a show at the local school yard. They would lay down ladders and place the transfer tanks on them ( OKI). There was no aeration then! So they would have every child in the village swirl sticks around in the water to keep the fish alive during the show! What a sight that must have been!
JR

From the post-war years to today.
Posted by Waddy on 10/15/2005, 12:59 pm, in reply to "some interesting follow up trivia"
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It was not until the early 1960's that Nishikigoi really took of in Japan in any real numbers. The advent of the vinyl bag and pure oxygen enabled brokers from all parts of Japan to visit Yamakoshi in the autumn and transport Koi back to their shops for re-sale. Their customers back then were those who collected 'one in each colour' for their garden ponds, popular varieties were Doitsu Yamabuki Hariwake; Bekko; Yamatonishiki; Kin Ki Utsuri; Asagi and Shusui etc. The demand for any kind of Koi became high and the breeders could sell all their production very easily, price was based then on size alone - the largest Koi demanded the highest price. Some breeders would sell their parent Koi in autumn rather than try to keep them alive in the Yamakoshi winter knowing they could easily buy more parents in the following spring from Izumiya - bloodline was not so important back then!
In those days there were no books on Koi and Koi keeping, there were no Koi clubs nor were there any Koi shows. The late Dr. Takeo Kuroki brought out his first book on Koi in 1965 and local Koi clubs started to surface in the late 1960's. It is said that one enthusiast purchased 100 tosai Kohaku from a Niigata breeder for 500yen each (then 50p or $1.00) and one later went on to take Supreme Champion at the All-Japan show!
By the late 1960's many enthusiasts were experimenting with early forms of filtration whilst many others were observing which type of Koi were worth buying and which were not. The hobby grew at an alarming rate as more and more enthusiasts came into the hobby and with the numbers along came more experience through practical learnings.
By the early 1970's many 'DO'S & DON'TS' started to be whispered:-
DON'T buy male Koi - female Koi develop a far better body shape.
DON'T buy Koi with 'red from purple' pigment as these Koi will lose their beni in later years, Instead DO buy Koi with 'red from orange' as these Koi will produce good pigmentation in adult years.
DO filter your pond water.
DO provide extra aeration in summer.
DO look at skin quality and body shape when selecting your Koi.
DON'T buy any Koi with signs of deformity.
DO try and find small Koi which will become much better as they grow.
As a result, and as the hobby grew, Koi purchases became far more selective and brokers discovered that they could not sell all their stocks as they had done before. The groundswell of voices from their customers demanded more good Kohaku, Sanke and Showa varieties and less accent on metallic or Kawarimono varieties. (Koi shows were now on the scene and only Go-Sanke could be judged for Supreme Champion award.)
The brokers relayed their customers demands to the breeders who soon realised that the heady days of high volume-production were soon to come to an end and a new era of 'quality' as opposed to 'quantity' was desired.
Some breeders adapted and concentrated on parent stocks and bloodlines whilst others continued to breed as before but found their production far more difficult to sell. It was around this time when the word 'TATEGOI' came to the fore as a direct result of the demands of enthusiasts to the breeders - Koi prices escalated accordingly and the names of the actual breeders became far more important to the enthusiast.
As the hobby progressed in Japan it became more common for enthusiasts to make the pilgrimage to Yamakoshi in autumn to buy direct from the breeders rather than from their local outlets. By the time the late 1970's came around one could witness hundreds of Koi enthusiasts scouring the mountainsides to find their own tategoi.
This status quo remained the same for another decade or so which takes us to the late 1980's when a significant export market for Nishikigoi had developed. This was usually handled by Japanese exporters - Kamihata; Hara; Tani; Far East Enterprises etc. etc. and the breeders found a new outlet for their production of tateshita.
Around the mid '90's we saw a total change in the Yamakoshi mountainsides in autumn. Visiting Japanese enthusiasts diminished in numbers only to be replaced with many overseas dealers and collectors from the UK; USA; Holland; Belgium; Germany; South Africa; S.E. Asia and the like. The demands from many of these buyers were for less common varieties and several breeders have met these demands by producing Chagoi; Soragoi; Ochibashigure; Asagi; Shusui; Kin Ki Utsuri; Hi Utsuri etc.etc.
Despite last years earthquake which rocked Yamakoshi to the core the Nishikigoi breeders have shown their resilience in coping with the disaster and have continued to breed their Koi - most of them are still in the business of trying to produce the best Koi in the world!
To those 'Koi Kichi' who have not yet visited Yamakoshi - do try to make it some day - it's the most favourite and fascinating area in the world for me.
Rambling over,
Waddy.
---------------------------------------------------------------------------------------------------------------------------------

You were hoping maybe I would say it was just a red and white carp with good skin and pretty colors?

I wish it were so simple.... Actually, not at all. I love the layers...


Sumimasen Sensei, for not answering the questions you gave to me, My grasshoppa self overlooked them...Gomenasai.


My system.
Submersible 3000 gph pump at lowest part of pond.
Goes through a UV Steriliser which I really dont need anymore.
Goes to a 55 gallon drum filter Mechanical/Moving bed (Cut up sponges)
Clean 1/3 of it every 2 weeks. Have another 55gallon drum not in service yet, will act as Mechanical filter.
after the bio/Mech filter, it goes to an additional Bio/Veggie Filter which spills over to another Header pool acting as a veggie filter, this then spills over the water fall into the pond.
I have 2 aerators, one for the filter, and one for the pond.


Every 2 weeks I do a check up on my fish, I net them, and put them into a fish tank with the pond water, I then check for Ulcers (top and bottom) and feel the scales to see if the slime coat is gone.

I feed around 4 times a day in the summer and about 1 times a day in the winter, WE have an Extremely Mild winter in california.
I feed the koi Hikari staple mixed with another koi food brand, I believe Satori staple.
Every so often I give the koi some watermelon and or Mango to give them the Vitamins and Minerals that the food may have lost or does not give them.

My stocking level is high, too high, and that is all about to change as soon as I can get to my dads in a week. All the goldfish will be thrown out, to another pond, I do not favor common goldfish at all. I am becoming a Kingyo (goldfish) Nazi. (exscuse me for the deragatory term) <----cannot spell


Gallonage of pond is 1100 gallons, The koi I just got will go to the 6000 gallon pond as soon as it is finished.
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Old 10-07-2006   #47 (permalink)
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ops posted a duplicate
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Old 10-07-2006   #48 (permalink)
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Good start on answers..... if you please, add some more of the particulars from the fllowing list... pH, kH, GH, pond "style"... type and amount of aeration, amount of flow through the filter and other? (waterfall, etc...looking for the "pond turnover") dimensions L times width times depth, in full sunlight or no?, plants?.. number and size of koi...

second...sounds like a nice size pond is in the plans...when to start/finish? what will that planned pond consist of? same questions as above...

Here is an simple article to go a little further on your kohaku class, but directly to the point on Selecting a Kohaku.

Selecting a Young Kohaku

By Bob Winkler, AKCA Judge (rswinkler@aol.com),
with credit to Dr. Art Lembke (head of the AKCA judging committee.).


I will keep this short and sweet, to be efficient. This could be much longer and if you have questions, please feel free to ask me, or one of the “senior” club members for more clarification. It has been often said in this hobby that “koi keeping begins and ends with Kohaku”. This is so true, as it is the basis for other varieties. It is the most important fish if you are looking for a future Grand Champion. We will assume for this series of articles that we have all good conformation (body shape) on healthy koi, with no deformities, or disease. Good conformation, put simply, means not too skinny or not too fat. Koi that are broad at the shoulders, have a large skull, and relatively large pectoral fins have a chance to grow larger. There are of course exceptions to these “rules”.

Think balance of pattern and skin quality when looking at any koi. The skin quality is easier to see on larger koi than 12”, so we will concentrate on balance. This means when you look at the koi from the top, the red area is evenly placed over the body. Look at the head and tail areas for “white tips”. It is preferable to have red on the head (i.e., don’t buy a Kohaku with an all white head) and to have it come down midway between the eyes. It can touch one eye, but preferably not both. The head is one of the most important parts in an early koi.

For the body, the red should be balanced and cover about 70% of the koi. This is so that as the koi grows, it will “grow into its coat”. Young Kohaku patterns have been likened to a kid wearing their father’s coat. It looks big now, but they will grow into it. The red on the body can be anything interesting or “eye catching” and personally I like koi that have some white “breaks” between the red areas. All red on the body should be in large patches, with no single scale red areas. The white should be “snow white”, but can be pinkish if they were fed color food. Avoid Kohaku with a “grayish white”. The red can be either bright red or orange red, but look for a very “solid” red. Meaning it should look like several thick layers of paint. Make sure there are no red or black marks on the fins.

This should help you in picking out your future grand champion, or just a pretty “living jewel” that you can enjoy in your pond for years to come.

and just to boggle your mind a bit more, here are a couple pictures of some friends of mine's ponds... just to show a close to perfect koi pond and water might look like...You may have seen these pictures b4...First is Tom Lansing's in Phoenix, with one of my favorite all time koi pond photos, and also of the infamous Thom Blischok's pond and his nearly, if not perfect, water. Pictures taken by Nigel Caddock of NI Magazine. And a picture of our "Diamond", who unfortunately succumbed to copper poisoning this past year.
__________________
Best regards,

Bob Winkler

My opinions are my best interpretation of my experiences. They are not set in stone as I intend to always be a student of life. And Koi.

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Old 10-07-2006   #49 (permalink)
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Just out of curiosity, when breeders breed, do they study the fish itself physically like only conformation, color, etc. or have they tried a more in depth analysis concerning genetics such as chromosomes, alleles, and about the laws of polygenic inheritance or codominance and female and male heredity issues? Such as mapping out their fish's genetic makeup and doing a chromosome map? Do they do this with every spawn or just a few times, if they do this at all? Such a question has always been at the back of my mind, and if anyone could provide any sort of insight or point me in the correct direction, it would be greatly appreciated. Thank you!
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Old 10-07-2006   #50 (permalink)
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now THAT is a question for James P. Reilly, who needs a title other than Sensei, because he has been so much more than that for myself and countless other koi keepers. Or maybe he is the real living example of exactly that... Simply...Sensei. There is a timely post by him on the selecting kohaku thread on this BBS right now. Save that one.

Here is what JR said in a different time about color and beni, that is related. Also some pictures of good Beni. poor Beni, and the sometimes elusive but important concept of fukurin. Hopefully you can start to see what one needs to look for from JR's posts and these pictures

color in koi
Posted by James P on 8/17/2004, 9:46 am
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Color in koi
We look at white ( shiro) black ( sumi) and red ( beni) in koi and often assume that they are the same in their nature. This is of course not true. The discussion of color involves several levels of conversation-
1) The origin of color - where does color come from?
2) The orientation of color- is a color actually the ground color or is it a pattern on top of the ground color? Is there an interplay of different types of cells within the depths of the skin that create illusions of other colors?
3) The location of color - where is the color actually sitting on the koi? The epidermis, the dermis, the scale top or bottom , muscle surface?

1) The origin of color:
Beni comes from color cells or chromatophores. And the content of these color cells comes from the diet. These pigments are primarily botanical in nature. This carotinoid material is taken in as plant oil and it is both fragile and not well absorbed. In fact, it is estimated that only 35 of consumed pigment is actually accumulated in the skin as an oil. Crustaceans do not contain the same pigments as plants- this is a common misconception. Crustaceans contain pigment protein which is a hasta-xantin combined with protein. This is the result of crustaceans ability to convert carotin into hasta-xantin. This is one step removed from the koi as they have their own ability to convert carotin to color directly. And because kohaku and sanke beni are of different ‘natures’color is best developed by the addition of several forms of color pigment- not just one. This is why feeding good koi an omnivore based diet is so important. Chlorophyll of algae being very important as zeaxantin and B carotin are the base pigments for good beni ( yellow/red pigment).The combination of ‘color foods’ will create deep STABLE color. Feeding one form of pigment or too much of one pigment will result in deep scarlet colors that are not stable.

The internal negative effects on beni are the presence of too much oil in the diet. This can result in oxidation of the color over time. The external negative effects to beni are extremes in pH and strong ultraviolet rays of the sun.
Sumi, on the other hand come from Melanin chromatophore pigment and is controlled primarily by the nervous system and hormones within the koi’s body. These sumi cells form networks on nerve fiber and fat cells within the skin. And their production takes place within the koi, unlike beni which requires outside sources of pigmentation.
The extent of pigment accumulation and appearance is however heavily influenced by ‘outside’ factors. Calcium and magnesium ions being of a very powerful influence. Some presence being a powerful incentive to bringing out sumi and too much being a factor in a lost tone to the sumi.
And along with sumi and beni we also have a luster cell in koi’s skin. This is the secret to high quality skin. This luster cell or guanine, is a substance controlled by the koi’s thyroid glands hormone output. And this is in response to ammonia within produced within the skin layers. This is why luster is lost in koi who’s metabolic rate is poor. This material can accumulate as crystals within the skin surrounding the scale and we call this fukurin. This luster can be seen in the cuticle of all fish as a uniform sheen as long as the fish is in excellent health and the metabolic function is removing toxins from the skin. This luster material should not be confused with irridocytes, which are cells that give white or silver ground color to a koi depending on which side the scales they are located on within the skin layer. These are also the cells that cause ‘black’ asagi to appear blue and DEEP high class sumi to a bluish in tone.
Running long again- sorry.
JR
Bob Winkler is offline  
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