Dry the lake and catch the strange fish, but you haven't caught it yet

For a fish, dry a piece of lake

Is it worth it?

Recently, Ruzhou City, Henan Province, took off the lakes of Yunchen Lake in the central park of the city to catch the "strange fish" in the water. The relevant live broadcast screen showed that over 30 million netizens watching the fishing process online.

On August 23, after the lakes of hundreds of thousands of cubic meters were removed, the "strange fish" had not been captured.

As of press time, the arrest team has locked the "strange fish" in the U -shaped culvert close to the upper and lower reaches of the lake, and decided to use the fire rescue personnel to carry oxygen cylinders into the culvert to arrest.

Judging from the current information, "strange fish" fled.

Water pumping operation map/CCTV news screenshot

What to do

As early as July, the relevant citizens had taken the emergence of suspected "strange fish" in Yunzhan Lake. Soon, related aquatic animal experts and scholars made preliminary judgments that the "strange fish" in the mouth of the citizens, the scientific name was crocodile.

The crocodile is the largest type of the seven types of birds, the maximum length of 3 meters.

It is fierce, with meat fish, and the living creatures in the water are almost common, and its whole body is covered with hard fish scales. The lack of natural enemies is at the top of the food chain.

This ancient fish native to North America is mainly distributed in the river and estuary waters along the Gulf of Mexico from Mexico to the Gulf of Mexico, as well as the lower reaches of the Missouri and Ohio River, and two lakes in Nicaragua. It is a typical foreign species.

It is understood that due to the strong adaptability of crocodile crickets, it will cause huge harm to natural ecology and farmers. Each female crocodile can produce more than 150,000 fish eggs at a time. Will eat a lot of local fish. According to reports, in recent years, Guangdong, Guangxi, Fujian, Henan, Sichuan, Jiangsu and other provinces have the wild distribution records of crocodile crickets.

But so far, the crocodile cricket has not been included in the "Foreign Invasion Species List".

In 2021, the Ministry of Agriculture and Rural Affairs, the Ministry of Natural Resources, the Ministry of Ecology and Environment, the Customs Department, and the State Forestry and Cao Bureau jointly issued the "Further Strengthening the Prevention and Control of Foreign Species", which clearly mentioned the supervision of the "strengthening the aquatic species of breeding links. , Promote the comprehensive management of migrants such as water gourd, Fushou snails, crocodile crickets, etc. ".

Many foreign invasion species that are all over the country are actually legal.

For example, Fushouluo was initially introduced as a food introduction, but later discovered that it did not conform to the taste of the Chinese people, which did not have economic value. After being abandoned by a lot of abandonment, it was flooded in the wild.

Zhou Zhuocheng, chairman of the Primary and Water Ecological Professional Committee of the China Fisheries Association, told China News Weekly: "Row Fei Fish native to Africa and the Middle East is also introduced as a breeding variety. So far, my country has introduced Nileo non -fish. 9 varieties such as Mozimi Cro Fei Fish, but due to strong adaptability and high survival rate, it has seriously threatened the survival of native species. In 2014, Luo Feiyu was included in the "China Foreign Invasion Species", becoming the third Catch on the foreign species on this list. "

Regarding crocodile, the relevant information did not indicate how it was originally entering China in the original way. Some experts speculated that it was originally illegally smuggled by ornamental fish.

Nowadays, consumers can easily buy such varieties in the ornamental fish trading market. Searching for e -commerce platforms, the unit price of crocodiles from fish to adults is between 10 yuan and 500 yuan.

Living crocodile cracker map/Taobao screenshot sold by an e -commerce platform

The aquatic animal UP owner Chen Yan (Neptune Frank) told China News Weekly that the fish, birds, fish and insect markets in almost every city in the south can be bought, and it is also very easy to raise after buying home.

"It does not picky eaters, likes to eat live fish, and does not need to care about temperature. It is slightly heated in the cold winter, and it can be raised at room temperature in other seasons. As the breeding time increases, it will become larger and larger. You can carry a maximum of 90cm or 120cm fish tank. When it becomes larger, it is really difficult to deal with, and it is likely that abandonment will occur. "Chen Yan said.

Because the Yunzen Lake in the urban park of Ruzhou is a large artificial lake, it is not a small distance from the surrounding natural water system. Chen Yan speculates that the crocodile crickets that appear in the lake are highly probably entered into the lake.

In Chen Yan's view, whether it is release or abandoned, it is irresponsible behavior to put foreign species to the waters at will.

Therefore, since the crocodile crickets have huge potential harm to the local ecology, it is right to arrest it and implement humanitarian treatment.

The question is, how to catch it?

To grab the crocodile crickets ashore, a few steps in total

Judging from the final results of Ruzhou City, a total of three steps were divided into three steps.

The first step is to dry the lake; the second step is to grab the crocodile birds; the third step, pour the water back.

In fact, after the first step was completed, the crocodile was missing.

It is understood that the Central Park of Ruzhou is 7 kilometers from north to south, with a total planned area of ​​2.83 million square meters. The entire park has a water system that runs through it, 5.5 kilometers from north to south, five lakes built from north to south, and the total area of ​​the water surface is about 505,400 square meters. Meter. Yunchen Lake, which pumps, is an artificial lake, with about hundreds of thousands of cubic meters of water, and the water surface is 300 acres. It can be seen on the live video that after many pumping water, more than 200,000 cubic meters of water have been pulled out. The bottom of the lake has been exposed to light, but no trace of crocodile crickets are found.

China News Weekly contacted a staff member who had participated in homework on the spot. He said that Ruzhou had rainfall a few days ago, and the difficulty of homework was greatly improved. The park was a pumping plan that was finally decided after a variety of considerations.

After attracting a lot of attention, the behavior of "drying the lake" was repeatedly questioned. For a fish, it was a small question to dry the whole lake water?

Among them, the most questioned question is: "Is it desirable to destroy the ecology in order to protect the ecology?"

In this regard, Zhou Zhuocheng believes that due to the artificial lake of Yunchen Lake, the damage ability of crocodile crumper is actually very limited. Even if it is dried in water, it will not cause too much damage to the natural ecology.

"As far as I know, the professional academic circles, scientific research circles, and fishing circles have not received local invitations or communication from Ruzhou. They finally used fire rescue to fish, and they also used the way of sons to find. ","

In Zhou Zhuocheng's view, the entire arrest operation failed, and the rescue team entered Handong fishing even to increase unnecessary risks.

"The delineation area placed the silk mesh waiting for its self -invested net efficiency, and the fishing experts are invited to hold the Luya contest easily. It can be fully promoted. Second, if you decide to fish for pumping. When the gear is arranged in the relevant areas, it will be involved in the network after the water level is decreasing. If it is in culvert, it can be easily arrested. "Zhou Zhuocheng said.

"Under the condition of clarifying the fish in the culvert, it is enough to use splashes of lime or high -power electricity to ensure the execution. Meaning. "Zhou Zhuocheng added.

Chen Yan's analysis of China News Weekly believes that "carefully observing the mouth of crocodile birds will find that this type of fish is obviously not a substrate, but the category of living in the middle and upper layers of the water. Generally, the mouth is like catfish like catfish. The downfish down the bottom of the bottom fish, which is not easy to observe on the shore. Individuals such as crocodile birds, coupled with huge body shape, are easily found on the water surface. , You can arrest. "

Regarding some netizens, crocodiles are fierce and may eat children's remarks. Chen Yan said that individuals with a body length of about 80cm do not have the ability to eat children. It does pose a threat to children swimming in the lake.

In response to Zhou Zhuocheng's suggestion to invite the fishing experts to host the Luya contest, fishing enthusiast Xiao Yu told China News Weekly that Luya fishing method was first to find the target fish, and then throwing out the bait to fish for him, but if the lake There is only one fish, and it is not easy to be found. Ordinary Luya enthusiasts cannot catch crocodile.

"Of course, theoretically, the way of Lutah is feasible for large carnivorous fish, but I have not heard of which Luya master is willing to try." Xiao Yu said.

The front and back of the arrest

Although many people have spent human and material resources in Ruzhou City, they have not been caught. From the perspective of the results, they still show some positive significance in the incident.

Chen Yan recognized, "Although the fish has not been caught yet, more and more people know that the crocodile crickets are used as foreign species. For the destructive power of the ecology, I know this kind of fish through videos and photos. In the breeding and contact, more people will understand the importance of ecological protection. "

The Baidu Index shows that in the past week, the search bar of multiple entries such as "foreign invasion species", "foreign species", "crocodile birds" has risen sharply, of which the search volume of "crocodile" was 200 times a week ago.

Crocodile Town Map/Vision China

"After at least as an ordinary person knows, you will know that you should not put the creatures in the natural environment in the wild, whether it is crocodile, or Luofei fish, Brazilian turtles, this is the most positive meaning of this matter." Chen Chen. "Chen Chen." Chen .

my country is one of the countries with the worst harm of foreign invasion species in the world. The relevant person in charge of the Department of Science and Technology and Education of the Ministry of Agriculture and Rural Affairs interpreted the "Administrative Measures for Migraphic Invasion Species" on June 17. In recent years, with the increasing frequent transmission of commodity trade and personnel in my country, the spread of foreign invasion species has become more diverse and concealed. Most invasive species can find a suitable living environment in our country. Once the colonization is set, it is difficult to eradicate the difficulty, which seriously affects the ecological environment of the invasion, and harms the sustainable development of agriculture, forestry, animal husbandry and fisheries.

On August 1 this year, in the "Administrative Measures for Foreign Invasion Species" jointly issued by the Ministry of Agriculture and Rural Ministry, the Ministry of Natural Resources, and the Ministry of Ecology and Environment, it is clearly stated that any unit or individual may not be introduced, released or discarded by foreign species without approval. Essence If it is not approved and is introduced, released, or discarded foreign species without authorization, a penalty will be imposed in accordance with Article 81 of the Biological Safety Law of the People's Republic of China. If a crime is suspected, it will be transferred to the judicial organs to investigate criminal responsibility.

It is understood that in the next step, my country will accelerate the implementation of foreign invasion census census in farmland, fishery waters, forests, grasslands, wetlands, and major inbound ports, and understand the number, distribution range, and degree of harm of foreign invasion species in my country.At the same time, the categories and species are divided into prevention and control guidelines, clarifying key periods, key areas and main measures to prevent and control, strengthen policy support and technical guidance for governance work, and adopt comprehensive measures to effectively manage foreign invasion species.The crocodile town hiding in the culvert was eventually arrested successfully, perhaps just a matter of time.

As for such creatures, once the arrest is successfully arrested, someone will definitely ask that question.China News Weekly contacted a merchant in the Haibaowan Aquatic Trading Market in Foshan City, which said:

"Eat, it's not delicious, not handled well and toxic."

Author: [email protected])

Edit: Hu Yun

Operation editor: Wang Lin

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