Finally caught this alien invasive species, Henan Ruzhou "strange fish" incident has an answer. It turns out that this strange fish is not one, but two, named crocodile eel.
This time, in order to salvage this exotic species, Henan Ruzhou Central Park really made great efforts to arrange a lake. You know, the water in this lake is about 200,000-300,000 cubic meters. The time for pumping fish is July 26, and then the lake bottomed out on August 23. It has been used for nearly a month, and the workload can be imagined.
Someone will definitely ask, is this necessary? Waste manpower and material resources just to catch these two fish? Where did this crocodile eel come from?
Crocodile Monopterus albus, also known as Crocodile and Monopterus albus, originated in America. Because its mouth and teeth are similar to those of crocodiles, it has this name, belongs to the order Monoptera, and is one of the largest freshwater fish in North America. The longest can reach about 3 meters, and the weight can exceed 150 kg.
This kind of fish was introduced to China as an ornamental animal around 1980s. However, in this process, some situations have been encountered, such as the crocodile eel escaping, some people releasing it and so on. Finally, it came to nature and became an invasive species.
Speaking of the "strange fish" incident in Ruzhou, Henan Province, it was actually discovered by local citizens. After the "strange fish" was discovered, the citizens reported it in time. According to expert analysis, this "strange fish" is probably a crocodile eel. If it is not removed in time, it will do great harm to the ecology.
In this case, the park will never ignore it. At first, the park organized people to fish with nets, but they didn't catch them. Later, Yu also invited a professional salvage team to conduct sonar positioning. The "strange fish" may be frightened and then hide and disappear without a trace. Then, the park bought a big purse seine and put bait to trap it, but it still didn't work. I have to say, this fish is too cunning.
The park must know the horror of this fish. Crocodile eels are so effective that they can even kill crocodile cubs in North America. On the contrary, alligators treat crocodiles and eels like this. However, in China, no creature can control the crocodile eel, and all the fish in its waters can be its food.
In fact, because there is no native fish in our country, how can we get it? It not only eats fish, but also eats all the creatures in the water. Once settled in a certain water area, it can do whatever it wants and eat almost 5% of its own weight every day. For a long time, only one fish could eat all the fish in a lake.
After the crocodile Monopterus albus was found in Ruzhou Central Park, local residents felt that the fish population in the lake began to decrease. If we continue to ignore it, the fate of the creatures in the whole lake can be imagined.
Crocodile eel is not only a threat to the creatures in the lake, but also a hidden danger to human safety. For example, on August 17, a little boy saw a strange fish in a landscape pool in a residential area in Taizhou, Jiangsu Province, and was accidentally bitten by three fingers. The fish was later fished out and found to be a crocodile eel with a length of 70 cm and a weight of 10 kg.
Therefore, from the perspective of residents' safety, parks must also be taken seriously. After all, there must be many people in Central Park every day. There are adults and children, so we must completely eliminate potential safety hazards.
In addition, Monopterus albus has a strong reproductive ability. Once it enters the breeding period, it can produce about 200,000 eggs at a time, and the eggs are highly toxic. According to the amount of eggs laid and food eaten by crocodile Monopterus albus, once a family is established in the surrounding waters, the creatures in the water may be extinct.
To sum up, firstly, Chinese alligator eels are very cunning and cannot be caught by conventional methods; 2. Threatening the lake ecological environment; Third, there are security risks to human beings. These three points determine that Ruzhou Central Park can only choose the most primitive method of "fishing with exhausted resources" for fishing.
But at present, only two Chinese alligator eels have been caught, and the fishing work is still in progress. When the water level in the lake completely recedes, you can see how many alligators and eels there are. I believe that this time I will catch it clean, and I will take strict precautions later to prevent "caring people" from letting crocodiles and eels go.