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Unusaul Behaviour

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  • Unusaul Behaviour

    Hi

    I have an unusal problem. I have a least one koi who is jumping, only at night, but every night for the past 3 days. They do not jump during the day. At least they dont jump during the day on the weekend.

    My water is fine, I have tested it both at night and daytime.
    We have not made any water changes or had any rain.
    We have no predators - our dog sees to that.
    We have no lights that come on or off.
    we have no ground vibration from passing traffic
    I cannot see or think of any other reason that they may be spooked.

    It is now 925pm, I have to turn on a light to see the pond and all the koi are swimming around happily and awake.

    Any ideas?

    Perhaps they need some therapy.

    BradleyI have an unusal problem. I have a least one koi who is jumping, only at night, but every night for the past 3 days. They do not jump during the day. At least they dont jump during the day on the weekend.

    My water is fine, I have tested it both at night and daytime.
    We have not made any water changes or had any rain.
    We have no predators - our dog sees to that.
    We have no lights that come on or off.
    we have no ground vibration from passing traffic
    I cannot see or think of any other reason that they may be spooked.

    It is now 925pm, I have to turn on a light to see the pond and all the koi are swimming around happily and awake.

    Any ideas?

    Perhaps they need some therapy.

    Bradley
  • #2

    I've noticed extra friskiness in Fall and Spring with some jumping, usually around dawn or dusk. Sometimes there will be a fish or two that flash a couple of times. I'll be starting to think of flukes when it stops and behavior goes back to normal, or they spawn. I seem to recall a post on another board where it was observed that some jumping occurred at night when the moon was bright.

    Comment

    • #3

      Change in Season

      Thanks

      Yes we are undergoing a change in season. But if that is the case - why. The koi live in a 5000L inground pond. This means that temperature variation between day and night are gradual and therefore any chemistry variations would be gradual also.

      As we are entring Fall/Autumn it is not likely to be a spawning issue.

      There is no full moon

      Bradley

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      • #4

        check for fish lice

        Comment

        • #5

          coupla questions before we breeze over the water issue:

          what is your PH at dusk and dawn? what is your o2 level at night vs day?
          Dick Benbow

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