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Thread: what disease is this?

  1. #1
    Tosai tangigi's Avatar
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    what disease is this?

    Hi,

    This is my friend's omosako shiro, age 5 years, size 75 cm. Can someone id this disease and recommend a treatment? thanks


  2. #2
    Daihonmei
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    That is a great picture. May I use it in one of my 'koi talks'? Yes, it is likely a neoplasm ( cancer tumors- carinoma) or a papillomas growth ( which is benign).
    what's happening here is the epithelial cells are in a case of extreme hyperplasia.
    The good news is, papillomas are both harmless and more common than squamous cell carcinomas.
    But only a biopsy can tell your friend for sure if the growth is harmless or deadly. I'm betting harmless. JR

  3. #3
    Sansai WayneB's Avatar
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    No idea what is - must be some type of growth, but a pity that it has been left to do damage to that extent. I hope that it is treatable.

  4. #4
    Daihonmei
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    it's not treatable Wayne but it has been known, if it is papillomas, to slough off in some areas and in some cases. Although not the same as carp pox ( a virus) papillomas might be virus driven or environmental driven. In the end, it takes on a life of it's own and only time will tell if it regresses or sloughs are is present for a lifetime. JR

  5. #5
    Jumbo l113892's Avatar
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    My god it's turning into a goldfish. Elephant fish disease?

  6. #6
    Daihonmei aquitori's Avatar
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    That is the first koi I have ever seen that looks like it was crossed with a ranchu....I would go with JR on this one, looks like a tumors.

  7. #7
    Oyagoi Sangreaal's Avatar
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    JR--look at the shiro behind the tumors. It's really upset, and looks to not have a whole lot of slime coat to it (from what I can tell from the pic). Is it spreading, or has something caustic been applied to or gotten on the fish to make the skin blister? I can't imagine something getting on the fish without getting in it's gills and killing it, but wonders never cease.

  8. #8
    Daihonmei
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    Good Morning Marie!

    We really need a biopsy to be sure, but I think it is papilloma. When I said 'environmental', I meant that many cancers are thought to be environmentally linked. As you suggested, I also find it hard to accept that something that would savage the epidermal layer to this degree would somehow spare the epithelium of the gills ( and kill the fish outright). Unless of course, this koi is guilty of 'bobbing for fries' in a Deep Frier!

    You can see that this complex of cancers, skin viruses ( like herpes koi pox) and papillomas are attacks and distortions of the upper skin layers and as such tend to not be deadly ( except in the case of cancer of course which moves into more critical layers of the skin and circulation/lymph systems). So this condition certainly is not painful and will only effect the fish when it obstructs other surface functions.
    I have a picture somewhere of a koi with a complete 'cauliflower head'! Not unlike a serious lion head oranda. I'll see if I can find it-----

  9. #9
    Honmei
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    Quote Originally Posted by aquitori View Post
    That is the first koi I have ever seen that looks like it was crossed with a ranchu....I would go with JR on this one, looks like a tumors.
    Tony, it would be an "Oranda" since Ranchus do not have dorsals. Scary thought that I would even know this! LOL

    Steve
    The views presented are my personal views and not that of any organization that I may belong to unless otherwise specified. [email protected]
    CKHPA

  10. #10
    Nisai
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    Contagious?

    Hi JR,

    I've never seen disease like this before. Your analysis of tumors sounds reasonable - and a biopsy would most likely prove you correct. My questions: Do you think its contagious to the other Koi? And, what do you think caused this?

    Thanks so much.
    Sincerely,
    John Russell
    www.russellwatergardens.com

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