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    Sexing a Koi

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    chr1ssy
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    Sexing a Koi

    Post  chr1ssy on Sun Feb 08, 2009 2:29 pm

    Sexing Koi

    1. Look at shape of fish first. Is it broad and high at pectoral fin level of body? This would be first clue without touching that it may be female. Do not go by shape of pectorals.
    2. Feel fish in bowl. First feel the gill plates. If scratchy one vote for male and normally 100%. If can't tell then run your fingers along front ray of pectoral. Thumb on top and pointy finger underneath. From body toward fin edge. If scratchy another vote for male
    3. Now in bowl hold fish firmly at peduncle with one hand and around the pectoral area cradling the pectoral between fingers with the other. Turn upside down and control the fish. Do not let it control you or it can get hurt. Now look at the anal/genital opening.
    A. the males will be longer from front to back. The edges will be hard and puckered like the edge of a crater. If you look in the middle normally you see poop but no tissue. Just empty void. If still not sure and looks something like this, then squeeze on both sides running from the middle of the fish toward the tail. If male will get a white milt out. No milt then vote for female..
    B. on a female the hole is more rounded than long. The edges are generally smooth with fish, not raised and prominent pucker like male. Sometimes if you can see or if you squeeze it a little you can see a slit running sideways. If you look down the middle you normally see tissue rather than a hollow middle. Slightly puffy and beige to pink in color. So this looks puffy and wide while a male looks hollow in middle, raised on sides and empty. If you squeeze a female no white substance comes out.
    4. While upside down look at the stomach area and feel it. A female upside down the stomach will lay down sideways a little since more fat. Also if you feel the stomach the female will feel flabby and the male will feel solid
    As you can see you have many things to look at that gives you lots of clues and generally points heavily in one direction. Do not forget to also look at color. If 16-18" the male will have deeper Hi and more finished black. The female will have more Hoshi type Hi and orange and the sumi will be deeper. Of course, if 24" fish they will have similar color.
    If you think this is educational feel free to post.


    Last edited by chr1ssy on Fri Feb 05, 2010 5:21 am; edited 1 time in total


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    Re: Sexing a Koi

    Post  Guest on Mon May 18, 2009 1:04 pm

    in what ive seen, the girls are bigger. but heres another,could it be true when bagging koi for transport the girls bleed from the gills. must admit ive seen this when shaz picked her new koi up at the week end .stress we know , but are the females more suseptable.
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    anubisram
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    Re: Sexing a Koi

    Post  anubisram on Mon May 18, 2009 1:06 pm

    don't be saying things like that simon you will have all the women on here saying "see I told you all women are more susceptible to stress"
    you know how they like to whinge Twisted Evil


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    Re: Sexing a Koi

    Post  Guest on Mon May 18, 2009 1:14 pm

    nope rich ive seen this , just wonder if its fact.
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    anubisram
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    Re: Sexing a Koi

    Post  anubisram on Mon May 18, 2009 1:21 pm

    i have heard it said before I must admit


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