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    Video of koi embryos

    Here is the link to video of moving koi embryos as seen under the dissecting microscope:

    https://www.youtube.com/watch?v=2M4UXp8Ao8A

    BorG
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    This book chapter was published three years ago....

    This book chapter was published three years ago. We obtained data on inheritance of red eyes later. In 2016 I posted information on this subject on KB forum:
    ...
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    Link to full-text book chapter

    Please note: you can download PDF file of manuscript (with figures) of chapter "Japanese ornamental koi carp: origin, variation and genetics" from book "Biology and Ecology of Carp" from the...
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    Free download of textbook on fish genetics

    Forum users, who are interested, can download my textbook on fish genetics using the following link:

    Fish Genetics: Theory and Practice. PDF

    BorG
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    I add 8 grams of MS-222 to 60-liters...

    I add 8 grams of MS-222 to 60-liters (15.9-gallons) tank; or approximately 0.5 g (500 mg) per 1 gallon. So, you should add 3.5 grams of MS-222 for 7 gallons.

    BorG
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    Even if goldfish eggs are inseminated with koi...

    Even if goldfish eggs are inseminated with koi spermatozoa there is no guarantee that all 100% of resulting fish are real hybrids (have chromosome sets of both species).There is such phenomenon which...
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    Yes, spermatozoa are inactive in seminal fluid....

    Yes, spermatozoa are inactive in seminal fluid. They are activated with water and start moving very actively; but their movement lasts only 1-2 minutes and they stop, spent. (If spermatozoa would be...
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    Our conditions of raising fish are very...

    Our conditions of raising fish are very different. We raise koi in 0.1 acre earthen ponds at pretty high density and feed them with commercial food used in aquaculture for edible warmwater fish. It...
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    Tommy Jon, Here are answers to your questions....

    Tommy Jon,

    Here are answers to your questions.

    I will refer to two videos:

    Video 1:

    https://www.youtube.com/watch?v=cP1_WxznMIc
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    Tommy Jon, Post your questions here and I will...

    Tommy Jon,

    Post your questions here and I will answer them.
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    MikeM, Thanks for your comments.

    MikeM,

    Thanks for your comments.
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    Article on inheritance of red eyes in koi

    Recently article on inheritance of red eyes in koi has been published. Please see corresponding file attached. Earlier I already posted on forum description of main findings:
    ...
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    Troy, You are welcomed to visit our facility...

    Troy,

    You are welcomed to visit our facility at Kentucky State University.

    BorG
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    Video on koi artificial breeding

    Recently we posted new video on koi artificial breeding on YouTube. It describes stripping of eggs and sperm as well as the process of artificial fertilization. In our previous videos on this...
  15. Demonstration video on transparent-scaled and red-eyed koi

    Earlier I posted some information on investigation of scale-transparency and red-eye mutations in koi on KB forum. Recently we made and posted on YouTube a short demonstration video on this subject....
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    Thanks for sharing. It seems that you described...

    Thanks for sharing. It seems that you described some other type of pigmentation. In my case pigmentation appeared much later and I doubt that it will disappear (although I will trace it in fish of...
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    Exactly what I thought. Only breeders can see...

    Exactly what I thought. Only breeders can see this type of pigmentation but not consumers (it exists only in underwater part of iceberg).
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    Rob, in my opinion shimis are some somatic...

    Rob, in my opinion shimis are some somatic changes, as moles in humans. But in this case there is type of pigmentation which has hereditary nature.
  19. Some photos

    Here are several photos as illustration for the first post of this thread:

    Photo 1: Red-eyed fish from F1 progeny (Akame Kigoi male x Kohaku female);

    Photo 2: Larvae with black and light eye...
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    Another type of black pigmentation?

    About two months ago I posted information on

    http://www.koi-bito.com/forum/main-forum/16133-inheritance-red-eyes-koi-unexpected-appearance-many-pigmented-fish.html

    Since that time I described...
  21. Rob, I searched forums too and found interesting...

    Rob, I searched forums too and found interesting post in old (of 2004) thread on Koi-Bito. This is from post #6 from thread Kohaku Fry or Kigoi?

    "... Anyway, it got me paying more attention to...
  22. There may be confusion if to consider this...

    There may be confusion if to consider this mutation as an albino one. Since albino mutation blocks completely production of melanin in entire body, in both skin and eyes. But this is not albino but...
  23. Inheritance of red eyes in koi and unexpected appearance of many pigmented fish

    Recently we obtained some interesting data on inheritance of red eyes in koi. Please see attached PDF file with abstract of presentation which I plan to give at the conference on aquaculture in...
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    Hi Masih, Here are answers to your questions....

    Hi Masih,

    Here are answers to your questions. I think that if females spawned in spring it is too early to induce their spawning in fall (autumn) of the same year. If you have some females, which...
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    ts, I think natural spawning is a complex...

    ts,

    I think natural spawning is a complex process and its progress is regulated by differently directed signals, both from males to females and from females to males. These signals can be some...
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