Crucian carp is a common freshwater fish in China. Under normal circumstances, crucian carp can live for about 10 years. There are also some crucian carp with longer life span, which can live for about 15 years, but this kind of crucian carp with very long life span is relatively small, they generally can not live for such a long time, because there are many factors that can affect the life span of crucian carp.
For example, farmed crucian carp will not live for a long time. This is because they will be sold after being farmed for a period of time. Crucian carp is edible. It is very common to use crucian carp as food. Farmed crucian carp are often sold on the market. Therefore, their life span is generally only a few years, not even 10 years. If the wild crucian carp is not affected by human factors, it can live for a long time, sometimes up to more than ten years. But if the waters they live in are polluted, or there is artificial fishing behavior, it will also shorten the life span of crucian carp, and even lead to their direct death.
Crucian carp can reproduce and spawn at an appropriate time, but it needs to meet certain age conditions. That is to say, crucian carp can reproduce only after it is sexually mature and has the ability to reproduce. Crucian carp that is too small cannot reproduce and spawn. Specifically, crucian carp around 2 years old generally have the ability to reproduce, and can reproduce and spawn when the water temperature is suitable. There are also some relatively early crucian carp, which can reproduce and spawn at about one year old. The specific breeding time depends on the local climate, the temperature in the south may rise faster, in March or so can breed and spawn; In the north, it is later, in April or even May.
