Natural crucian carp, also known as native crucian carp and sunflower seeds, belongs to the genus Carassius. Crucian carp is one of the most common fish in the waters of the subcontinent, and their shadows can be seen in rivers, lakes and even streams. In fact, this is not unexpected. Because natural crucian carp is actually a kind of freshwater fish, its origin is in China (except Yunnan-Guizhou Plateau in China, of course, other places are all over the talking sea). As a kind of fish with medium size, fresh meat and no picky eaters (omnivorous), natural crucian carp has been marketed and popularized all over the world.

The big problem is solved. Let's look at another small problem. Many friends may also find that there are no fish in some artificial ponds or natural ponds, but fish will appear for a while, and there is a great chance that crucian carp will appear among the fish. So, where did this natural crucian carp come from?

Crucian carp is a kind of fish that lives completely in water. It is unlikely to jump from the sea into talking water like a mudskipper. So crucian carp happened in this water body without crucian carp, which must be brought by a "third party". So, is there any way to make crucian carp "jump" into other waters?

First: Rush

In an area, there will always be some water bodies with crucian carp, as long as it is like that. When it rains or floods, this water body with crucian carp will be connected with other water bodies, and some crucian carp and fish eggs will be washed into new water bodies, but they are carnivorous fish. As long as there are green plants and microbial strains in the new water body, then crucian carp will survive and multiply.

Second: belt

In other words, some animals can send crucian carp eggs to new water bodies. Generally speaking, such animals can be divided into two categories: birds and amphibians. Birds are birds. Birds refer to all birds that are active at sea. The key food source of this bird is water, mainly seafood. Some birds will inevitably get some fish eggs on their bodies or front paws when catching fish. This is why when this bird happened in a new water body again, it brought the eggs to a new state, so there was crucian carp. In addition to belts, birds have a fast metabolism. When they eat some fish with perfect eggs, their feces will also contain some fish eggs, which are just discharged into new water bodies to produce fish.

Amphibians can bring fish eggs, mainly frogs. When frogs enter other water bodies from the water body with crucian carp, they are likely to bring some crucian carp eggs and produce crucian carp for new water bodies.

Third: release

Some people like to release animals, and fish is also a common kind of released animals. Bian Xiao found that in areas where released fish are concentrated, there are always people holding net bags to catch fish. Some newly released fish are taken away by these people, so some people will choose some water bodies in the suburbs to release them in order to better prevent the released fish from being taken away, so that fish are produced. Naturally, it is good to let go, but don't blindly follow suit. It is best to know the origin and growth habits of animals before releasing them. For example, many people like to release Brazilian tortoises. This kind of personal behavior is actually not releasing, but killing. Because the Brazilian tortoise is not native to China, there is no nemesis in the wild, and the native species (such as fish and other turtles) will continue to be greatly reduced.