Foreign invasion has always been a big ecological problem, but many people think that it is still difficult for alien creatures to survive on the mainland.
Like the crayfish that invaded in the 1930s, from invasive alien species to the need for artificial breeding, crayfish live too undignified. Since its introduction, although the number has increased significantly has become an ecological disaster, the superb cooking skills of the wise people, coupled with the advantages of cheap tilapia and less thorns, tilapia once became a delicacy on the table, and the invasion problem is no longer a big problem.
However, some invasive species, because the taste is too poor, can not even eat to solve, that is, scavengers.
Scavengers, also known as sucker fish, sucker catfish, scientific name leopard print lipid catfish, belongs to the invasive species.
They like to eat the residual bait dirt of the aquarium, which can play a role in purifying water quality. Some people like to call it garbage fish and eat fish.
This fish has no natural enemies in the country, because the skin is very hard, the flesh is very rough, it is not delicious, and it is very easy to survive, and it multiplies in large quantities, occupying the living space of native fish.
How tenacious is its vitality? After a few days of fishing it out of the water and putting it in the soil, it is still alive when you put it in the water!
Why do scavengers flood the continent?
In addition to the extremely tenacious vitality mentioned above, there are several other reasons:
1, its food intake is amazing; the scavenger's mouth is like a vacuum cleaner, it is very fond of eating eggs of other fish, and the amount of food is amazing, you can eat 3000-5000 fish eggs a day.
2, the adult scavenger is very fierce; the adult scavenger will eat the injured fish, even the small fry will not let go, in front of it other fish is difficult to survive.
3, as long as there is water can live; whether it is clean water or sewage, the scavenger can survive, even in the absence of water, it can survive for several days.
4, the reproductive ability is very strong; they mainly lay eggs in autumn and winter, the number of eggs laid at a time can exceed 1,000, and eggs can be laid every month during the peak of breeding. During the breeding season, scavengers would go to the sides of the river near the water to make holes to mate, and this habit not only caused the embankments on both sides of the river to become increasingly loose.
The scavenger's mouth is like a suction cup
Why don't we eat scavengers?
In addition to its rough flesh, it only has meat on its tail, and another reason is that scavengers are omnivorous fish and do not reject putrid food, so they tend to ingest a lot of bacteria, which is not good for the human body.
Charcoal-grilled scavengers
Cucumber scavengers also nibble with relish
But even so much the ostracists who were rejected were planted in India!! Why do amazing Indians love to eat scavengers? Take a look with Wanwan! [Smile]
1, India's natural waters are doomed to the failure of the scavenger "struggle for hegemony"
In the natural waters of India, there are not only natural enemies of scavengers, but also many types and numbers, which also makes it quickly lose in the "battle for hegemony".
The most famous aquatic organisms in India are the "Indian catfish" and "Ganges turtle". These large predators number 3-5 million in the Ganges alone. In addition, they are also present in other waters of India.
The Ganges turtle has flooded in India
Indians feed the Ganges turtle
In addition to the famous "Indian catfish" and "Ganges turtle", there are also large carnivorous predators such as giant bass and Ganges crocodiles in India's natural waters.
Giant bass
For these large carnivorous predators, the scavenger's hard shell to protect itself is vulnerable, so the scavenger loses its first advantage of "hegemony".
2. India's poor people are short of food
India has always had a high and low race, and the people of the high race have no worries about food and clothing, but the food of the people at the bottom is relatively scarce, and even some of them are hungry.
Although there are many cattle in India, cattle are called "holy relics" and cannot be slaughtered and eaten casually, especially for the bottom people, eating beef is equivalent to sin. Therefore, the "nameless and shareless" scavenger has become the "delicacy" in the mouths of the people at the bottom.
In Indian supper stalls, scavengers dominate, comparable to crayfish and oysters on the mainland. At an Indian supper stall, a roasted scavenger also sells for 10 yuan.
Why don't Indians eat catfish and turtles from the Ganges?
Some people may wonder, since the Indian people are short of food, why not eat "Indian catfish" and "Ganges turtle"?
First of all, there is a local water burial custom! People are put into the river after they die, and most of these dead people become food for turtles and catfish, so they are rarely eaten.
Secondly, most of India's water quality is heavily polluted! These large turtles and catfish survive in the river for a long time, and more harmful substances accumulate in the body.
Since none of the above can be eaten, when meat is relatively scarce, exotic species scavengers become an option. Eating scavengers not only has no customary concerns, but also its growth cycle is shorter, and there are fewer harmful substances accumulated in the body, which is more reassuring to eat.
This is why scavengers can run rampant in Guangdong, but in India they have become a delicacy!
Stewed scavengers
Charcoal-roasted scavengers, looking so hungry
Okay, that's it for today. Don't remind everyone Oh, if you meet a scavenger, don't release Oh, don't underestimate this little fish, it is likely to damage the ecological environment!