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Spawning Koi

Updated on July 2, 2011

Breeding Koi

There are several reasons for breeding koi. Some merely do it as a hobby while others intend to create a new variety out of crossbreeding. But no matter what reasons you may have, the process will still be the same. The most ideal time in spawning koi is between the month of April and July. The event usually takes place annually and may last for a couple of days. It is expected for them to copulate during these months since it is the time of the year where mating season begins.

Preparation must start one year prior to the spawning event. During this time you must ensure that both sexes are in their best shape by feeding them properly and keeping them healthy. Remember that the quality of the fish will greatly affect its offspring. Also, age is a factor that should be considered. Males should be 3-4 years old while females must have reached the prime age of maturity which is between 4-6 years. Age has a direct influence to the quality of egg s produced.

Koi Spawning

After preparing the koi fish you may now proceed with the location set-up. You may need to look into several factors which are vital for successful spawning. A specific place where females can lay their eggs must be prepared. The grass located at the bottom of the pond is the most common medium used when laying eggs. You can also create an artificial place with the use of PVC pipe connected to a nylon rope.

Make sure that the breeding tank or pond contains good quality of water with sufficient oxygen supply. Water temperature plays an important role in initiating the mating activity. The propagation is expected to take place when water temperature reaches 18-20 degrees. The proliferation usually takes place early in the morning where males start to aggressively chase the females which may seem like they are fighting due to severe aggression exhibited by the males.

After Spawning

When the eggs have been laid, immediately remove them out of the pond before their parents eat them. You can place them to a separate tank for hatching but ensure that it has the same temperature as with the breeding pond and sufficient oxygenation.

Some breeders are reluctant with the idea due to its accompanied risks. The process itself can pose danger to the fish health and may affect its color and pattern. Despite the anticipated risks, there are still lots of hobbyists who continue spawning koi. There are also instances of an unplanned spawn and breeders are often taken by surprise. But regardless of the preparation, koi farmers always anticipate the worst since every year thousands of low quality fry are being produced. Most of them are already grateful that even a small number of their fry made it to adulthood.

Breeding Koi - Your Comments

Submit a Comment

  • sibaja_health profile image

    sibaja_health 8 years ago

    So much great information on spawning koi. I would love to have a koi pond, they seem so relaxing. I think I'll assess the possibility of building one next time I go to Home Depot

  • Alex ONeill profile image

    Alex ONeill 8 years ago from Sweden (But I'm from Colorado)

    I've loved Koi since I first read about them in a Jonathan Kellerman book. They really are beautiful Gypsy and totally worth it

  • Litany Notch profile image
    Author

    Litany Notch 8 years ago from South UK

    If you have a large enough pond with plenty of places for the young to hide, some should survive naturally.

  • Gypsy Willow profile image

    Gypsy Willow 8 years ago from Lake Tahoe Nevada USA , Wales UK and Taupo New Zealand

    Sounds a bit complex, unless my Koi raise young naturally, I don't think we will be able to raise them ;(

  • Mireille G profile image

    Mireille G 8 years ago from Kansas

    Koi are so much fun and a very zen way to relax. Thanks for posting this that kind of gave me a few minutes away from working and pretending I was back somewhere taking in the calm of a koi pool.

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