Random facts

  • Species: Koi
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Actinopterygii
  • Scientific name: Cyprinus carpio haematopterus
  • Type of fins: ray-finned

What characteristics place the Koi in that class?

Because the Koi is a bony-fish and a ray-finned fish it belongs to thevlass of Actinopterygii.


Koi reproduce through spawing in which a female lays a vast number of eggs and one or more males fertilize them . Koi will produce thousands of offspring from a single spawing. However the large majority of these offspring will not be acceptable as nishikigoi (they have no interesting colors). So the Koi is a oviparous fish.


The Koi is a fish which is kept for decorative purposes in outdoor koi ponds or water gardens. It is unusal to find a Koi in the wild.

Koi fish live in fresh water.

Where on earth is the Koi found?

The Koi is a Japanese Fish but in almost every country it is people like to have a Koi as a pet

Why did I choose this fish?

I chose this fish because we have some Koi fish in Switzerland. These fish are so beautiful and it is a my hobby to take care of the fish and I also built their pond.

3 interesting things I learned

  • Kois don't occur in the wild because it is too colorful and other fish would eat it
  • Kois descened from the carp
  • Kois can reach an age of 50 years
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