CATDOLL : CATDOLL: How big can koi grow in a year and how long does it take to breed?

Generally, small koi can grow about 10-20 cm a year, while grown koi can only grow 2-3 cm a year. Fully grown koi will stop growing. Koi can live for about 70 years, and koi before the age of 10 will grow faster. Koi at the age of 10 can grow to 100-150 cm. After that, their growth rate becomes slow, or even stops growing. When breeding, if you can adjust and control the environment and water quality, you can make them grow faster and better.

1. How big can Koi grow in a year? Generally, small Koi can grow about 10-20 cm a year. Koi has a lifespan of about 70 years. Koi in the first year can grow to 10-20 cm, Koi in the second year can grow to 24-30 cm, Koi in the third year can grow to 37-40 cm, Koi in the fifth year can grow to 45-50 cm, Koi in the tenth year can grow to 55-70 cm, and Koi over ten years old can grow to 100-150 cm.

The growth environment and water quality will affect the growth rate and size of koi. Therefore, if you want koi to grow fast and big, you need to provide them with sufficient living space, control the water temperature at 20-25 degrees, change the water on time, keep the water clean and have enough oxygen. Feed them nutritious, easily digestible and fresh feed.

2. How long does it take for Koi to reproduce? Male Koi can reproduce after more than two years, and female Koi can reproduce after more than three years. Male Koi aged 3-6 and female Koi aged 4-10 are the most suitable for reproduction. Koi with reproductive capacity can reproduce once a year. April, May and June of each year are the best time for reproduction. Koi breeders should choose Koi that are strong and mature, and breed them in a ratio of one to three female Koi to male Koi. Breeders should pay attention to immediately isolate the female fish and the eggs after Koi spawns to prevent the eggs from being eaten by big fish.