—The Great Carp of the Great Lakes of the United States—
In China, a braised carp or sweet and sour carp can make most people salivate in an instant, but the Americans who have "fought for 60 years" with Asian carp have recently been "colander-filled with oil and busy work", because the fat carp has "proudly" "invaded" the Great Lakes of the United States, and if it is not quickly treated in the next few decades, the Asian carp with super reproductive ability and not weak aggression will reshape the ecological structure of the Great Lakes!
This scene really made Chinese, who loves to eat food, drop his jaw in shock, which can be said to be both envious and doubtful. Of course, the reason why Asian carp is flooded in the United States is that Americans hate That Asian carp has a grassy smell, the taste is not delicious enough, and the United States does not have such a good cooking skill as China, which is naturally difficult to swallow.
—6 Two-fold delicious tiger shrimp "ravaging" the United States—
But recently there is another kind of Asian tiger shrimp in the United States flooded, this kind of prawn is close to six or two, the size and human arm is almost the same thickness, see here do you think such a large tiger shrimp can be flooded in the United States, must not be able to eat or not eat.
But you are wrong, Asian tiger shrimp is one of the world's 300 kinds of commercially farmed shrimp, large, delicious taste, which can only be blamed on the short history of the United States, cooking is too poor, there is no food culture to speak of!
—The Americans' troubles are one more, this time the lionfish—
In addition to the flood of carp and tiger shrimp, there is now another "annoyance" for Americans, this time a seafood that is both beautiful and delicious, and sold in China, which is quite expensive, called lionfish.
In China, a few centimeters long ornamental lionfish can sell for about 200 yuan, and a dish made of 30-40 centimeters of lionfish can sell for thousands of yuan.
Lionfish, like Asian carp and Asian tiger shrimp, have their hometown in Asia (as for why it has not flooded in Asia, the reason is probably that the Chinese food culture represented by our China is too broad and profound).
Lionfish, also known as scorpionfish, originally lived in the western Pacific Ocean and the Indian Ocean, because of the long spines, like the hair of male lions, so named lionfish.
In addition to the beautiful long spines, the color of the lionfish is also very bright, its flesh is very smooth and tender, a little cooking can make people salivate, in many high-end hotels in China, the lionfish is a pricey seafood dish, but it is the same as the pufferfish, although delicious, but contains high poison!
—Beautiful and dangerous lionfish—
In the natural world, if a creature is extremely bright and colorful, the first instinct of human beings is that this thing is poisonous, just like colorful poisonous mushrooms and colorful poisonous snakes, and lionfish are no exception.
The poison of the lionfish is hidden in the long spines on the dorsal fin, which is also its weapon to attack other fish and protect itself, which is why the lionfish, which is only a few tens of centimeters in size, has few natural enemies in the ocean.
So why would americans introduce lionfish that they didn't have? The reason is that Americans have been deceived by the beautiful appearance of lionfish.
In the early 80s, the Americans introduced this lionfish from Asia in the way of ornamental fish, of which there are six such lionfish in an aquarium in Florida, USA, but in the summer due to the unique terrain structure of the United States, prone to hurricanes, a hurricane hit Florida, which led to the 6 lionfish escaped into Miami's Biscayne Bay, see here you may feel that there are only 6 fish in total, can set off what storms in the ocean, and for lionfish, the U.S. sea is "unfamiliar with life", Won't be bullied by native fish, right?
The answer is that these 6 lionfish were not bullied by native fish, but instead triggered a serious biological invasion in The history of the United States, all of which stemmed from the terrifying reproductive ability of lionfish.
— Lionfish's terrifying reproductive and attack abilities —
Lionfish in the breeding period every 4 days will spawn, each time can spawn can produce 30,000 eggs, a lionfish can lay 2 million eggs a year, this exponential growth of reproductive ability in the animals absolutely belongs to the first echelon, and the lionfish also has its own unique killer, that is, the above-mentioned poisonous stinging needle, on the one hand can make themselves immune to the attack of fish in the United States, on the other hand, they also make themselves "new arrival" without worrying about eating and wearing.
What does super reproduction plus no predators equal? It is equivalent to rapid flooding in U.S. waters. This can "hurt the fish in the southern waters of the United States"!
It turns out that the lionfish is small, but the amount of food is very amazing, but also not picky, every day a lionfish can eat the equivalent of 90% of its own weight of food, in the lionfish diet, including more than 100 kinds of marine fish in the southern waters of the United States, such biological invasion has caused a great negative impact on the Florida seas.
While the number of lionfish in the local waters has increased rapidly, the number of other fish has declined by 65%.
Since the lionfish is so harmful, and the taste is not bad, there will be no toxicity after correct treatment, it can be large-scale fishing, even if the American cooking is too poor and does not like to eat, you can also export it, but the problem is not so simple.
— Lionfish's trick to "hide from humans" —
In order to protect itself, in addition to the stingers on its dorsal fin, the lionfish usually likes to hide in the crevices of the coral reef, and may only come out to walk around when preying.
Therefore, if you want to catch lionfish through large-scale artificial trawling operations, it is actually not feasible, you can only use professional fishing tools to catch one by one through divers after diving, this workload can be too large, after all, lionfish are all over a large area of the sea, and the diving depth of lionfish can reach hundreds of meters deep, and humans can only dive to tens of meters to be unable to support, and the cost of large-scale artificial diving fishing is too high. Then there is no way for humans to do it?
—The Americans' Counterattack —
In order to reduce the harm of lionfish, the United States began to vigorously promote the delicious taste of lionfish, hoping that people can fall in love with delicious lionfish, and at the same time announced some lionfish cooking methods on the Internet.
It's not enough to make people fall in love with its taste, you need to increase your fishing efforts.
The first solution is to artificially train sharks to fall in love with eating lionfish, the way is very simple and rough, that is, after humans dive, they directly use tools to shake the lionfish into the shark's mouth and force the shark to fall in love with the lionfish.
Train sharks to fall in love with eating lionfish
Since artificial fishing is too laborious and inefficient, in order to deal with lionfish, the Americans designed a fishing robot that can hunt more than ten lionfish at a time, and the depth of hunting has also increased to hundreds of meters relative to artificial fishing, which greatly improves the hunting efficiency, but the cost still exists. And it does not completely solve the problem of lionfish flooding, but only slows down the breeding speed and distribution density of lionfish to some extent.
Fishing robots
—Summary—
Whether it is Asian carp or Asian tiger shrimp and lionfish, are a kind of biological invasion, although in our view, this is simply the gospel of foodies, but many biological invasions do bring trouble and huge losses to the local area, people should really try to avoid biological invasion events from the source, after all, after such a biological invasion as crayfish is eaten by the Chinese people can only rely on artificial breeding to maintain the population is still a minority.