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  1. #1

    White lumps and lesions on koi

    Hi, new on here. After some help in identifying what this is. Started off as very small white lumps that are progressing and eating away at the flesh. Lost one koi already and now it seems to be spreading to the others. I have never seen anything like it so any help would be greatly appreciated as I don’t want to loose any more.





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  2. #2
    Senior Member Rank = Jussai Djstiles999's Avatar
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    Do you have water parameters and have you done a scrape?

  3. #3
    Quote Originally Posted by Djstiles999 View Post
    Do you have water parameters and have you done a scrape?
    Trace ammonia and nitrite. Just transferred fish to new pond so filter is still catching up but nothing high. Done a scrape and found a few flukes that I have treated for yesterday but far from an infestation. Been trying to get rid of them most of the season with not much luck. Treatments just seek to knock them back but never get rid of them.


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  4. #4
    Senior Member Rank = Jussai Djstiles999's Avatar
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    I wonder if they are cysts, a parasite created one?

  5. #5
    Quote Originally Posted by Djstiles999 View Post
    I wonder if they are cysts, a parasite created one?
    Possibly. Just seems off as I can’t see anything by the naked eye or on a microscope. Just don’t know where to start as they are rapidly going downhill. Only seems to be effecting the bigger fish though for some odd reason.


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  6. #6
    Getting worse now and are eating away at the fish. Tried cleaning the wounds but at the rate this is spreading I can’t see anything being alive by next week. Absolutely gutted…


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  7. #7
    Senior Member Rank = Jussai Djstiles999's Avatar
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    You could try a call to Lincolnshire vets? I must admit I’m a bit of a loss, looks like cysts but you haven’t found any parasites on the fish? You could try a pm to a member here called Feline, I believe she is a vet although she may be away?

  8. #8
    Extreme Koi Member Rank = Sansai 14tb's Avatar
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    Hi it could be dermocystidium, Dermocystidium (lincsfishhealth.co.uk)

    or maybe Lymphocystis I am not an expert please contact one I recommend Paula Reynolds at Lincs Fish Health,

    Contact Paula Reynolds for advice at Lincolnshire fish health.

    Keep us posted ,good luck Tony
    Last edited by 14tb; 27-07-2021 at 10:54 PM. Reason: spelling

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  10. #9
    Quote Originally Posted by Djstiles999 View Post
    You could try a call to Lincolnshire vets? I must admit I’m a bit of a loss, looks like cysts but you haven’t found any parasites on the fish? You could try a pm to a member here called Feline, I believe she is a vet although she may be away?
    Gonna give her a ring tomorrow as everybody seems to be pointing me in her direction.


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  12. #10
    Quote Originally Posted by 14tb View Post
    Hi it could be dermocystidium, Dermocystidium (lincsfishhealth.co.uk)

    or maybe Lymphocystis I am not an expert please contact one I recommend Paula Reynolds at Lincs Fish Health,

    Contact Paula Reynolds for advice at Lincolnshire fish health.

    Keep us posted ,good luck Tony
    After looking up dermocystidium I’m almost certain it is this. Looks identical and matches up with what I’m seeing. The flukes and the fish knocking themselves has made the problem a lot worse. Seem to have knocked the flukes out so fingers crossed they can recover. Pulled all koi out with open wounds yesterday cleaned and sealed up and have upped salt levels as well as adding acraflavin and using oxytetracycline mixed in with food. They look a hell of a lot better today so hopefully I have reacted soon enough to save the rest.
    Thanks a lot for that White lumps and lesions on koi


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  13. #11
    Extreme Koi Member Rank = Sansai 14tb's Avatar
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    Hi As I said I am no expert,please take my advice and speak to an expert like Paula Reynolds before treating your koi. You will find her very helpful and knowledeable.

    Enquiries:
    Daily 10 am - 4.30 pm


    Telephone:
    01205 723413


    more info here.
    The Yorkshire Koi Society - Discussion Forums

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  15. #12
    Update. Passed on to pretty much every fish in the pond and they went downhill very fast. Decided to pull out everything that was showing signs and euthanise with hope of saving the remaining 6 fish. Looked happy and healthy up until this evening when the rest of them are starting to show up with the white lumps. Absolutely gutted…


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  16. #13
    Extreme Koi Member Rank = Sansai 14tb's Avatar
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    Gutted for you did you contact Paula Reynolds she is an expert

  17. #14
    Quote Originally Posted by 14tb View Post
    Gutted for you did you contact Paula Reynolds she is an expert
    Yeah I did. Basically nothing I could have done apart from isolate the fish with symptoms. Went through them so fast though. The fact you can’t treat them just makes it even worse as you’re pretty much helpless. The bizarre thing is that nothing was added for some time and nothing obvious showing. Not even sure if it can just go on its own if the fish recover or if it can come back out again..


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