Can koi fish live for 100 years?
The average koi bred outside of Japan can be expected to reach 15 years of age, while the average Japanese koi’s lifespan is 40 years. Some sources give an accepted age for the species at little more than 50 years.
How long do big koi live?
The average koi breed outside of Japan can be expected to reach fifteen years of age, but the average Japanese koi’s lifespan is forty years.
Are koi easy to keep alive?
Koi are easy to keep, and an aquarium takes up little space. Koi adapt to their environment and grow according to their space. So they will not outgrow the aquarium nor jump out. Koi are also strong.