The average lifespan of koi is usually between 60 and 70 years, which is based on statistical data under good feeding conditions and environment. Under natural conditions, the lifespan of koi can even exceed 70 years, and the longest recorded lifespan of koi is 226 years.
Factors Affecting the Lifespan of Koi
- Water Quality: Koi are suitable to live in water with a temperature of 20 - 25°C and a pH value of 7.2 - 7.5. If the water quality is too acidic or alkaline, or contains excessive harmful substances (such as ammonia - nitrogen, nitrite, etc.), it will affect their health and lifespan.
- Feed: Koi are omnivorous fish and require a balanced diet, including protein, fat, carbohydrates, vitamins, and minerals. Unbalanced feed nutrition may lead to a decrease in their immunity, thus shortening their lifespan.
- Cultivation Density: Excessive cultivation density will lead to a decrease in the dissolved oxygen content in the water, increasing the risk of collisions and disease transmission among koi, which will affect their lifespan.
- Diseases and Parasites: Koi are vulnerable to diseases and parasites such as white - spot disease and anchor worms. If not treated in a timely manner, it can be fatal.
How to Prolong the Lifespan of Koi
- Stabilize the Water Temperature: Use a heating rod to stabilize the water temperature at 20 - 25°C to avoid excessive water temperature fluctuations.
- Reasonable Cultivation Density: Ensure that koi have enough space to move around to avoid overcrowding.
- Regular Water Change: Change the water every 3 - 5 days, replacing 1/3 of the fish tank each time to maintain stable water quality.
Through the above measures, the lifespan of koi can be effectively prolonged, allowing them to grow healthily.