some lovely koi in the forgeround

Is that a crayfish?

Thanks for the comment. Temperature in Seoul normally is approx 5 degree (Celsius) lower than Japan (Tokyp). Winter temperature normally is around -10 degree and 35 degree in summer. My pond water got frozen last winter with 5~7cm thick ice. I heard that Kois can endure outdoor at least 1 meter depth. Water temperature in summer goes upto 25 degrees.

very interesting pictures, what is the minimum winter temperatures that your koi live through & what is the maximum summer temperatures.
hope you don't mind all the questions, just very interested in how koi live in different conditions

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Hi,

Can you tell me which design software package you used on the last picture please.

Thanks,

Graham