Recently, many netizens across the country are paying attention to the fish catching action in one place, and many people have watched the live broadcast online for a long time to see how they catch fish, and this place to catch fish is Yunchan Lake, City Park, Ruzhou City, Henan Province. An ordinary fishing behavior, why do so many people pay attention to it? The original caught fish is not ordinary, not an ordinary fish, but a "strange fish", the so-called strange fish, in fact, is the local people have not seen, that is, not a local species, is an exotic fish, the name is called "crocodile eel".
About the capture of "crocodile eels" in Ruzhou, Henan
In order to catch the strange fish, the local park management drained the entire lake water of Yunchan Lake, which can be described as "exhausting and fishing", and in the early morning of August 27, the good news came that the strange fish had been caught, and it was confirmed to be "crocodile eel", and harmless treatment was carried out. At this point, it seems that it can be drawn to an end, but it seems that it is not, and there is a more intense discussion about the fishing behavior on the Internet. There is a voice that believes that "in order to catch two fish, it seems that it is not worth it to drain the entire lake, invest a lot of manpower and material resources, and hurt the people and money."
Two crocodile eels captured
For the above remarks, I don't know what everyone thinks? From a geographical point of view, it should be supported to catch these two exotic fish at the expense of draining the lake. Of course, in fact, the local park management has also tried to catch crocodile eels by fishing and trapping, but they have not succeeded, so they can only make this decision and drain the lake water to catch fish. Obviously, if these two strange fish are not caught, then there will be huge safety hazards and ecological hazards.
Ruzhou City Central Park
First, the alligator eel is native to North America and is mainly found in the Gulf Coast rivers and estuaries from Mexico to Florida, the Missouri and Lower Ohio Rivers, and two lakes in Nicaragua. The alligator eel is the largest of the 7 species of gar eel in North America, which can grow up to 3 meters in adulthood, this fish has sharp teeth and has the potential to actively attack humans, and is a large and fierce fish. The park is an open public place, and if there are such dangerous fish in the lake, there is obviously a huge safety hazard.
Alligator eel
Secondly, since the alligator eel is native to North America, it is an "exotic species" for us. We know that the natural geographical environment of a certain region has the characteristics of an overall nature, such as the natural geographical elements such as the terrain, climate, soil, biology and hydrology of the continent, which affect and restrict each other to form an organic whole and form biological species that conform to the local biological chain. For different regions of the earth, the natural geographical environment is different, so the biological species living in different regions are not the same.
A map of the distribution of terrestrial natural zones that reflect differences in the natural geographical environment
Alligator eels are exotic species to the mainland, and alligator eels are the top predators in rivers and lakes in their native North America, with few natural enemies. Then, when the crocodile eel comes to us, it is even more like a fish, and it is difficult to meet an opponent. If left unchecked, then there may be a school of alligator eels in a few years, and through the river network system, alligator eels may enter other waters, and it is almost impossible to catch these fish at that time. In fact, there was a similar case in the United States, that is, the "Asian carp" flooding incident.
Map of the distribution of Asian carp in the United States
In the 1970s, in order to solve the problem of algae and microbial flooding in the Mississippi River Basin, the United States introduced eight types of fish species from Southeast Asia, such as carp, grass carp, silver carp, and bighead carp, collectively known as "Asian carp". At first, these fish were very dedicated, eating the algae and microorganisms in the river channel clean, and an adult Asian carp can eat 5 kilograms of food a day. However, due to the wide range of Asian carp feeding habits and the rare natural enemies in North America, large numbers of breeding have squeezed the living space of local fish and flooded. The United States has spent hundreds of millions of dollars to control Asian carp, but with little success.
Flooded Asian carp
In fact, whether it is "alligator eels" or "Asian carp", they themselves can not carry out such a long migration, to a certain extent, we humans helped these alien invasions. Therefore, our customs offices have quarantine inspection departments to strictly prevent the invasion of alien species. In addition, some exotic species are introduced for some purpose, such as research, ornamentation, etc., such as alligator eels, alligator turtles, Canadian yellow flowers and other species, all of which have a certain degree of ornamentality. The crocodile eels that appear in the lake this time are likely to be released by the breeders privately, and you seem to be protecting life, but don't let your kindness do bad things.
Alligator eel in an aquarium