On January 1 this year, the Ministry of Agriculture and Rural Affairs, together with the Ministry of Natural Resources, the Ministry of Ecological Environment, the Ministry of Housing and Urban-Rural Development, the General Administration of Customs and the National Forestry and Grass Administration, organized the formulation of the "List of Invasive Species under Key Management", which began to be implemented. "There are a lot of exotic species", "The 'blacklist' came in time"... Once released, this directory attracted many netizens to discuss it, and the number of online topics reached 2.98 million. Based on the nationwide survey of exotic species in 2022 and the monitoring and research of scientific researchers over the years, the contents of this latest list have been updated from 52 to 59. The alligator eel, the Canadian goldenrod, the American white moth... people may have heard of these alien invasive species only occasionally. In fact, the invasion of alien species is not a new problem in China. Most of the time, these alien invasive species are inconspicuous. They quietly bring ecological disasters to some areas, making it difficult for people outside the affected areas to pay attention to them. Until last August, the alligator eel entered the public view in a different form, letting more people know what the "alien invasive species" is. The lake water was drained only for two exotic "strange fish" and "fish caught?" On August 26, 2022, in the hundreds of bullet screens of a live broadcast platform, this question "brushed the screen". At least 37 million netizens watched the live broadcast behind the comments and screen. The live broadcast was in Ruzhou, a small city in Henan Province, where the staff drained nearly 300000 tons of lake water in the park in order to catch two "strange fish" named alligator and eel. The next day, Ruzhou reported that two crocodile eels, one male and one female, had been captured and treated innocuously. At this point, the one-month "lake fishing war" ended. In the meantime, there have even been doubts on the Internet that this action is "wasting money and labor". But this event can be said to give the whole nation a popular science lesson on the invasion of alien species. As early as 2002, under the leadership of the founder Hu Yinchang, the innovation team of exotic species and ecological security of the Chinese Academy of Fishery Sciences has begun to pay attention to invasive aquatic organisms. Gu Dangen is the chief scientist of the innovation team of alien species and ecological security of the Chinese Academy of Fishery Sciences, and the expert on the prevention and control of alien species invasion in the national bulk freshwater fish industry technology system. Since 2009, the team has conducted long-term and large-scale investigation and monitoring of a variety of exotic aquatic organisms, including alligator finches and eels. The alligator finch eel has an amazing appetite. Once it is overrun, it will not only affect fishery production and threaten food security, but also cause a sharp decline in the population of aquatic animals such as native fish through predation, thus affecting the aquatic biodiversity and aquatic ecosystem, and then threatening ecological security. According to the survey data, the alligator eel has spread rapidly in China in recent years. There are records of wild capture of alligator eel in most provinces and regions from Hainan to Beijing and from Shanghai to the southwest. If it is not intervened early, it may spread to most natural rivers. In order to find out the distribution and quantity changes of exotic aquatic organisms such as alligators, finches and eels, Gu Dangen's team cast nets, took water samples and "fished" in various waters in the south all year round. This time, the alligator eel entered the new list, and a large number of first-hand survey data provided by the scientific research team
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