Koi Size and Growth

Koi – Size Does Matter

How big can a Koi grow? This is a common question often asked by Koi breeders and Koi breeders-to-be. It is a myth that a Koi grows to the size of the pond that they were bred in, but it does play a small role in the growth of a Koi. The truth is that Koi can grow to as long as a meter which is 100 cm/39.37 inches/3.28 feet. It all depends on the Koi genetic bloodline characteristics.

Besides relying on the genetic bloodline characteristics for its size, there are several other factors which will affect their size and growth. This includes the water quality and temperature, concentration of oxygen, type and amount of food. Also, exercise and vitamins play an important role in the Koi’s growth.

Hungry Koi at feeding time.

You have to know that Koi can grow to become humongous. Getting to know this fact would actually do you some good (so that you can plan ahead and get a bigger pond that will be able to accommodate it when it grows to an extreme size).

Female Koi are sought after more often than male Koi. This is because a female Koi has a superior body shape pattern. Females tend to be bigger and heavier, but it isn’t a bad thing at all especially when the weight of it is equally distributed to the right places. Though the females are much more popular than the males, it cannot be said that all the males have a lousier body shape pattern. It is just that the females have a tendency of possessing a better body shape/volume.

For a Koi to grow to become large and healthy, their food would need to be of great quality. Though feeding a Koi with live food everyday would seem impossible, getting them good quality food would boost their growth and at the same time allow them to be at their pink of health. Rewarding your Koi with live food every now and then would be a great thing to do if you want to see your Koi grow big, healthy and vibrant.

When there is a mix of small and large Koi in a pond, it is known that the large Koi would excrete growth inhibiting hormones. It is not known how much of this is true, but it is said that this happens because the large Koi, that has a greater odds for survival would try to keep their dominant position for as long as they can. So, if you want to get your Koi to grow as large as possible, breed similar size Koi in a pond to get the best results.