Guangdong is shocked by the proliferation of "tree-climbing fish". Is this fish an alien species?

Guangdong's breathtaking tree-climbing fish, this kind of flooding has brought trouble to the ecology. This kind of fish, the scientific name of perch, usually lives in slow-moving ponds or ditches. It is the king of living in polluted waters and can reflect the water quality of a region. This fish is not an exotic species in China.

Perch climbing has a strong viability. They can use their strong pectoral fins to perform some difficult movements and climb over some small ditches, slopes, embankments and so on. , and even climb trees. In addition, they can survive in the air for a period of time without suffocation, so this kind of fish is also called tree climbing fish. This fish is a protozoan in China, which is widely distributed in the world and has many origins, such as Bengal and China. We can clearly find that the countries where perch lives are mostly in South Asia and Southeast Asia, which shows that this kind of fish is more likely to survive in the tropics.

In China, perch grows in many places, and southern provinces such as Hongkong, Guangdong, Guangxi, Taiwan Province, Macau and Fujian are very suitable for this kind of fish to survive. They have been growing on this continent since ancient times, and they are the aborigines of Chinese mainland, which may be related to the hilly areas and water sources in southern China. They can survive better in these places, and it is difficult for them to make a long-distance migration trip to the north by browsing the relatively low soil slope.

Many times, when we judge whether an organism is an alien species, we will think that most of them are alien species that cause damage to the ecology. However, Parthenocissus tricuspidata also has many advantages, for example, it can detect water quality and can be kept as an ornamental fish. In many areas, perch climbing is cultivated artificially, but a large number of perch climbing will also bring harm to the ecology. So this creature can adapt to the domestic environment, and it is native to China, not an alien species.