- Japan uses breeding techniques to improve the koi so that the koi has many different colors.
Koi can be raised in aquariums or general outdoor pools.
When koi were very young, they would be preyed by birds if they were kept in outdoor pools.
Many aquarium pet shops sell koi.
Koi has a strong ability to adapt to the environment.
There are many types of koi, distinguished by different colors, patterns and scales.
Koi grows very fast.
Koi are easy to raise and breed, and they do not require high water quality.
The body length of the koi can be as long as 100-150 cm, and the life span can reach 60-70 years.
Koi are omnivorous fish, they can eat small fish, shrimp, and algae in the water.