(People's Daily Health Client Zhao Yuanzhi) Recently, a "strange fish" appeared in Yunchan Lake in the Central Park of Ruzhou City, Henan Province. The live broadcast of the roundup was watched by more than 30 million netizens online simultaneously.
After identification by relevant departments, this "strange fish" was confirmed to be an alien species alligator gar. In order to round them up, nearly 300,000 cubic meters of water in Yunchen Lake was basically drained after a month of pumping.
Some netizens questioned, is it worth spending so much money just for a fish? In this regard, Zhao Yahui, associate researcher at the Institute of Zoology, Chinese Academy of Sciences, explained to the People's Daily Health Client that the alligator gar belongs to the top of the food chain, and its appearance will pose a great threat to the survival of native species in the region, and certain measures can be taken. Clear and maintain ecological balance.
The crocodile gar is native to North America. There are no crocodile gars in our country. It was mainly introduced as an ornamental fish . It has entered some natural water bodies in our country due to random releases. However, because of its large size and carnivorous nature, it is harmful to indigenous aquatic animals. Animals pose a greater threat.
Alligator gar Qilu Evening News Picture
Alligator gar is an animal of the order Gars , Garsidae, and genus Bone Gar. It is the largest of the seven species of gar fish and can grow up to more than 3 meters. Alligator gar are freshwater fish that mainly live in pure fresh water. Their living habits are more suitable for living in still water, such as ponds, river backwaters and other places. Alligator gar have their own unique breathing method. In addition to normal breathing through gills, they can also breathe air directly to the surface of the water, so they have strong adaptability. It has a ferocious temperament and is a carnivorous fish. It eats almost all living creatures in the water. The hard scales on its body are hard enough to allow it to avoid the threats of many ferocious predators, so it is at the top of the food chain.
"So its appearance will definitely pose a threat to the native species in the area and destroy the ecological balance." Zhao Yahui said that crocodile gar have been found sporadically in my country, but at present, it has not formed a stable breeding group, and it is not considered safe for the time being. Invasive species can only be regarded as alien species.
Many young people now choose to buy insects, reptiles, arthropods, etc. as pets from abroad through online shopping. Zhao Yahui said that this will increase the possibility of alien species damaging the local ecological environment. "If the raised alien species are released into the natural environment and can reproduce themselves in the invaded area, it will cause harm to the economy, ecology, biodiversity and society. The impact of invasive alien species in our country will cause significant economic losses every year. "
reporter's inquiry found that on August 1, The "Measures for the Management of Invasive Alien Species" jointly issued by the Ministry of Agriculture and Rural Affairs, the Ministry of Natural Resources, and the Ministry of Ecology and Environment clearly stated that no unit or individual may introduce, release, or discard alien species without approval. species. Anyone who introduces, releases or discards alien species without approval will be punished in accordance with Article 81 of the Biosafety Law of the People's Republic of China. Those suspected of committing a crime will be transferred to judicial authorities for criminal liability in accordance with the law.
Zhao Yahui urged that if you want to keep some overseas ornamental fish or pets, you must introduce them through formal channels. If you want to abandon them midway, do not exile them to nature by yourself. You can do harmless treatment, or find relevant agencies to help deal with them.
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