The lifespan of koi fish generally can reach 70 years, and the longest can be more than 200 years. Koi are fish with relatively long lifespans. The lifespan of koi fed at home is around 25 years. The specific lifespan is related to feeding management and other aspects. In addition, the lifespan of koi is also affected by conditions such as water quality and temperature.
According to records, there is a red carp named "Hanako" in Japan. Born in 1751 and died in 1977, it lived for a total of 226 years and can be regarded as the "oldest living koi".
The reason why the lifespan of koi is so long is partly because they have strong adaptability, gentle temperament, and are omnivorous animals. They like to live in the middle and lower layers of water with slow currents and relatively deep water bodies. In addition, koi also have a special position in Chinese culture, symbolizing good fortune and luck. They are often regarded as feng shui fish and ornamental pets. These factors work together to make koi not only unique in ornamental value but also show their unique vitality in lifespan.