As early as the last century, experts from all over the world were studying species from other countries and introducing major domestic economic species.
No matter which country, there will be a large number of exotic species, such as British hairy crabs, German crayfish, China bullfrogs, tilapia and so on.
Most alien species thought it would bring good benefits, but in the end they multiplied in large numbers and invaded the local ecological environment, causing ecological damage and huge losses.
A long time ago, a fisherman caught a strange fish. Its shape is very strange, especially its head. Generally speaking, it is like a mutant fish.
This strange fish is actually called "duck-billed fish" by most people. This kind of fish native to the Mississippi River in the United States is called paddlefish.
It is called platypus because its head organs are as flat and long as platypus, but its body parts are different from normal fish.
It is understood that this fisherman was arrested in the lower reaches of the Yangtze River, but after being arrested, it caused many people to watch.
In fact, platypus was introduced as early as 1988. At that time, experts thought that this giant freshwater fish had excellent genes and wanted to cultivate it into an economic species.
This kind of fish is as famous as Chinese sturgeon and Russian sturgeon and has high utilization value. Adult platypus can grow to at least 2 meters and weigh up to 100 Jin.
It is such an exotic economic species with strong adaptability, and its reproductive ability is the "leader" among fish, and it can produce 6 million eggs at one birth.
Now there are many breeding bases in China. Duck-billed fish is not only edible, but also kept in aquariums.
However, due to people's stocking and the escape of duck-billed fish breeding bases around the river, many duck-billed fish came to the rivers in China.
Usually, invasive species will bring huge economic losses, they will destroy the local ecology and occupy the environment of local species.
But since platypus can grow so big, and it is better than native fish in all aspects, won't the invasion of China have other effects?
It is true that platypus is genetically good, but in fact, they eat plankton all their lives, and of course some crustaceans are also their recipes. In other words, platypus is milder than those large and fierce carnivorous fish, and will not have much influence to some extent.
In addition, platypus is very picky about the living environment. At this time, if duckbill fish can appear in the Yangtze River, it means that the water quality is good and many fish can survive. In recent years, the effect of river regulation in China is remarkable, and fish can live freely in the water.
The original intention of platypus itself is to be an economic species. This kind of fish is basically not seen in the market, only some high-end restaurants will see it. As far as we know, duck-billed fish is delicious, and its protein and amino acids are in line with human healthy diet. Not only that, it can also make caviar at a price of 200-300 yuan per kilogram. If it is regarded as an ornamental fish, the price of platypus with a tail less than 20 cm is 40-50. Therefore, don't be afraid at this time, even if duckbill fish come to all parts of China, or even flood. One person and one pair of chopsticks can do it. By then, the fish that can grow to 100 kg is estimated to grow to less than 65,438+00 kg in China.
In fact, invasive fish such as platypus are very common in recent years, but we in China can't put it down.
The local crucian carp, carp and grass carp are basically used to it. At this time, if you can change to other fish, it is also a good choice. In this regard, have you ever seen wild platypus? Welcome to discuss.