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Thread: Dead Koi found

  1. #1

    Dead Koi found

    Hi all

    Noticed a Koi swimming slowly, and not chasing food like the other Koi.



    A couple of days later it was dead and floating on the top of the pond.

    First time a Koi has died after having them for 4 years.

    On first research I thought it was this cotton disease related to bad water quality. But it’s not supposed to be fatal?

    Did some tests afterwards and says I got high NO2 &3
    So been doing some gradual water changes (20% water change each day over a few days).
    Also lowered the amount of food I’m giving the guys.

    Checked the other Koi, they look fine and energetic.
    Is there anything else I need to worry about or do to avoid more deaths or disease spreading?
    Does anyone have any idea what disease this looks like?




    Sent from my iPhone using Tapatalk



  2. #2
    It would also be worth scraping a few fish and checking for any parasites.

  3. #3
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    For the fins to be eaten away like that the water quality / maintenance regime has to be lacking so that would be the priority, then scrapes since if there were parasites they will now be hunting for a new host.

    Did you look inside the gills and check what condition they were in?

    A gill biopsy would have been a good move at the time you found it, but would be too late now.

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  5. #4
    Looks like michael Jackson in that first pick and deep fried in batter in the second , poor thing geez. Never seen anything quite like it tbh.

  6. #5
    No I didn’t inspect the dead koi.

    After fishing it out, it was stinking out the whole garden and attracted flies, so wrapped it up and disposed straightaway.

    So, I should do an inspection on the other koi by scraping them? Cool. Haven’t done it before so will have a look for some vids.


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  7. #6
    Water quality wise though, i do a filter clean every week on an EzPod. And it goes into a trickle filter with volcano rock.

    The water is super clear, I can see the bottom of the 2m pond, so assumed it’s alright.

    I have never done a regular water change though. Which I have started doing now at a 10-20% change each time.


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  8. #7
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Quote Originally Posted by Kenny000666 View Post
    Water quality wise though, i do a filter clean every week on an EzPod. And it goes into a trickle filter with volcano rock.

    The water is super clear, I can see the bottom of the 2m pond, so assumed it’s alright.

    I have never done a regular water change though. Which I have started doing now at a 10-20% change each time.


    Sent from my iPhone using Tapatalk
    Clear never means clean !!!

    Do you use St or any thing when adding water ??

    Sent from my SM-G973F using Tapatalk
    Freddyboy the legend

    "we are water keepers first"

    Johnathan

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