Furthermore, koi fish that socialize well cost more, too, thanks to the charm of koi fish social interactions and the increased likelihood of getting them to mate with their partners. An especially attractive prize-winning koi can cost as much as $10,000. Award-Winning Fish
Some pumps, like the Oase Optimax, pump more than 30 gallons per watt of electricity. Taking into consideration how much energy it takes to run a filter, pump, aeration system, and waterfall, the typical small Koi pond will consume between 300 and 500 watts per day, which amounts to about the same energy output as the average computer.
The most expensive koi in history was S Legend, a Kōhaku variety that brought in a whopping $1.8 million (203 million Yen) in October 2018. Miss Yingying, a koi enthusiast and collector, bought the female 39-inch colorful carp from the popular breeder Kentaro Sakai, after an intense bidding war in Hiroshima at his fish farm.
The cost of a Koi fish in South Africa can vary depending on the factors mentioned above. On average, you can expect to pay anywhere between R200 ($15) to R5000 ($370) for a Koi fish. For example, a small and common variety of Koi may be available for as low as R200, while a larger and more rare variety can command prices upwards of R5000 or more.

How Much Do Blue Koi Fish Cost? Since most blue koi are the Asagi variety, you can expect these koi to sell for $1,000 to $2,500 as an adult. However, the typical price for pet shop koi ranges from $75 to $200.

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how much a koi fish cost