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Thread: Koi age and growth

  1. #1
    Nisai
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    Koi age and growth

    How old would the 4 inch koi u buy at pet stores be? I have a koi that i had for 1 year and it is now 12 inches is that average growth or should they grow faster? At what age does the growth slow down?

  2. #2
    Daihonmei MikeM's Avatar
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    Growth rates vary greatly depending on conditions. The typical 4-inch koi seen in U.S. pet shops is just a few months old. Many are domestic-bred and are harvested at about 3 months of age to supply pet shops that do not care to have anything larger. Some are the smaller fish found among tosai harvested in the Fall. Some are imports from Asia sold in bulk sorted only by size, which can be available pretty much throughout the year.

    My expectation is that a tosai be 5.5-8 inches when harvested in the Fall, with those given warmer growing conditions over the winter being able to reach 8-12 inches. Some are purposefully grown to be 'Jumbo Tosai', and can be over 12 inches by March-April. Some are marketed that are around 18 inches. It used to be that the typical nisai would be 14-18 inches, but now they can be 22 inches or more. Part of it is genetics, but mostly it is the result of providing conditions that allow year-long growth and aggressively feeding to produce growth.

  3. #3
    Daihonmei
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    Most pet store koi come from foreign sources like south east Asia. Korean imports are also very common and produce a gosanke looking fish. The established tropical fish farms from Thailand to Taiwan also produce a very inexpensive product from flock spawns. And lastly we have a few dozen domestic sources located in Arkanas and the Eastern southern states ( Florida/Carolinas/Georgia/Alabama). In the case of the tropical fish trade those fish are in warm water and fed aggressively and sold very young. Usually just a few months old when you them in a 45 gallon aquarium at Pet Smart.

  4. #4
    Nisai
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    Quote Originally Posted by JasPR View Post
    Most pet store koi come from foreign sources like south east Asia. Korean imports are also very common and produce a gosanke looking fish. The established tropical fish farms from Thailand to Taiwan also produce a very inexpensive product from flock spawns. And lastly we have a few dozen domestic sources located in Arkanas and the Eastern southern states ( Florida/Carolinas/Georgia/Alabama). In the case of the tropical fish trade those fish are in warm water and fed aggressively and sold very young. Usually just a few months old when you them in a 45 gallon aquarium at Pet Smart.
    So then a the fish i got 1 year ago and is 12 inches is average growth and at what age does the growth slow down? it seems that its starting to put on less length and more girth.

  5. #5
    Oyagoi Eugeneg's Avatar
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    Quote Originally Posted by 300wby View Post
    How old would the 4 inch koi u buy at pet stores be? I have a koi that i had for 1 year and it is now 12 inches is that average growth or should they grow faster? At what age does the growth slow down?
    It depends a lot on the genetics of the parents and how well it was fed in its early life. However it is rarely that you can pick up fish that are worth keeping from a pet store. If you consider the cost of keeping a fish for ten years and especially in your climate it is better and lower cost in the long run to spend a little more and get one from a koi dealer.
    Regards
    Eugene

  6. #6
    Nisai
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    Quote Originally Posted by Eugeneg View Post
    It depends a lot on the genetics of the parents and how well it was fed in its early life. However it is rarely that you can pick up fish that are worth keeping from a pet store. If you consider the cost of keeping a fish for ten years and especially in your climate it is better and lower cost in the long run to spend a little more and get one from a koi dealer.
    Regards
    Eugene
    So what could a guy expect to pay for a good koi? how does shipping work. Where would a guy get one from?

  7. #7
    Meg
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    that would depend on your wants and expectations for the koi.
    pond flower? or show Queen?

  8. #8
    Nisai
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    Quote Originally Posted by Meg View Post
    that would depend on your wants and expectations for the koi.
    pond flower? or show Queen?
    Dont need a show koi just something that would look good in my pond

  9. #9
    Sansai redman's Avatar
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    Thats's how the addiction starts! lol

  10. #10
    Meg
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    sent you some links via a PM so you can do some window shopping.....

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