How can you tell if the sex of fish is male or female Koi? Perhaps you have also asked this yourself when you plan to spawn or breed your Koi varieties. Generally, it is believed that female Koi grow bigger than the males. This belief is apparently true since most winning show Koi species tend to be female. However, if you plan to specialize in growing and selling Koi, it is very important to know the sex of the fish accurately.
So to help you determine the gender of your fish prior to spawning them, here are some of the ways on how you can tell the difference between male and female Koi. Basically, the first step in identifying their gender is through keen observation. One of the best ways to determine their sex is when they are feeding. It is because you will have your best view of your Koi at this time. On the other hand, you can only tell the difference once they are old enough.
For mature male Koi fish, their body is typically slender, which looks like a torpedo shape. They also have breeding tubercles, which typically appear during breeding time. Tubercles, by the way, are small white spot found on the gill plates of the fish. However, you should never mistake these for itch. Female Koi, on the other hand, are usually fatter at the abdomen. When viewed from above, you will notice that they are wider and rounder.
But perhaps the biggest way to tell the difference between male and female Koi is during springtime, which is also the breeding time for most pond fish. It is because when Koi fish begin to spawn and lay eggs, you will see that males love to chase or court females. During this time, male Koi also tend to develop white bumps on the back end or side, which is a sure sign that the fish is male. Apparently, female Koi fish do not develop this manifestation.
Ultimately, determining the sex of Koi fish in a more accurate way is one of the most exciting parts in keeping Koi varieties. In addition, being able to successfully breed them and reproduce attractive new Koi species are always a bonus. So the next time you look at your pond, check if you can determine whether they are male or female. Then, the next lesson you need to think about is how to effectively breed or spawn your beautiful Koi varieties.