Wild fishing, often encounter a small size fish, regardless of size or appearance, it looks very similar to the grass carp of the rare version, that is, wheat ear fish. Speaking of its fishing head must be a buzz, because it is too annoying, is the object of many anglers to kill the fish, but do not underestimate the wheat ear fish, although it is small, do things are not ambiguous at all, with its own vicious means and crazy operation, once became the overlord of wild waters, but also invaded Europe to sweep 32 countries, the record can once be in the annals of history. Today, let's talk about the wheat ears that are small in size but have big troubles.
The wheat ear fish is a carp, wheat ear fish, the body is slender, the tail is long, the abdomen is round, the head is small and slightly pointed, the eyes are larger and the mouth is small, the scales are relatively large, there are some dark spots, the female and juvenile fish are lighter in color, and there is a black longitudinal band in the center of the body. It resembles a grass carp, with a body length of 37 to 102 mm and a body length of 3.4 to 4.3 times its height.
It is a small freshwater fish that lives in gentle and shallow waters in flat rivers, lakes and ditches. The juveniles feed on rotifers, etc., and when they grow to a size of 2-3 cm, they begin to prey on the larvae of the mosquitoes and aquatic insects, which have a certain positive effect in the eradication of diseases and pests. It is highly resistant to cold and pH, and is native to China, Japan, South Korea, North Korea, Mongolia, and Russia. Because of his greed for grabbing bait, he is hated by anglers.
For anglers or aquarium enthusiasts, wheat ear fish is more familiar, wild natural waters, many places will have the figure of wheat ears, in the fishing they are constantly hooking, and aquarium lovers in the wild, also often encounter wheat ears, or is the fish, they are equal to the halving dominate the wild waters. So what makes it so unscrupulous to dominate the wild?
Miscellaneous food: wheat ear fish can feed on all kinds of algae, organic detritus, all kinds of aquatic insects, etc. in the water, the most famous is the elimination of mosquito larvae, which is also their only contribution, but also for the future invasion of other areas. The most headache is that they will eat the eggs of other fish, which is a more "immoral" behavior, perhaps afraid of retaliation, but they themselves are well protected by juvenile fish.
Strong adaptability: Wheat ear fish is very hardy and adaptable to water pH, can tolerate low oxygen environments, and is resistant to some organic pollutants and even pesticides. The most perverted thing is that they will change their body's adaptation mechanism, have different biological characteristics in different environments, and have no one's ability to adapt. So after they enter the new environment, the population will show explosive growth in a short period of time.
Strong fertility: The breeding period of wheat ears in China is from April to June, during which eggs are laid as many as 3 times, and the number of eggs conceived by females is about 350 to 3100 per time. After the water absorption expansion of the resulting eggs, it will also have a certain viscosity, which can be adhered to aquatic objects such as aquatic plants and small branches, and will not float around. And adult wheat ear fish will have egg protection behavior, until the fry will swim and forage on their own, do their best. Coupled with the fact that the juvenile fish can reach sexual maturity in that year, they can reproduce again the next year, and the cycle will reach a terrifying number, squeezing the living space of other fish.
Fatal disadvantages: Although they have some of the above amazing advantages, they also have disadvantages, that is, they belong to high-oxygen fish, and once they leave the water, or if the water environment is small, they will die due to lack of oxygen.
The most typical case is that the river in the Dianchi area of Yunnan is not too good, there are many mosquitoes, and the ears of wheat are very good at eating mosquito larvae, so they want to use the habit of wheat ears to improve water quality. But expected that the beginning did not see the end, the fighting power of the wheat ear was too strong, the mosquito larvae were destroyed, but other aquatic insects were also packed by the way. It has caused the uncontrolled growth of aquatic plants in the water, which eventually led to the serious enrichment of Dianchi Lake, the destruction of the ecological environment, and the sharp decline of many native fish species that could not adapt. It is still difficult to control the number of ears of wheat, because if there is any negligence, they will immediately make a comeback.
Some people say that the wheat ear reached Europe because they introduced it indirectly, that is, in the 1960s, when Romania imported the eggs of four major fish from Wuhan, China, it was mixed with the wheat ear. Some people also say that the ear of wheat is brought to Europe by aquarium enthusiasts to cause flooding, don't look at the ear of wheat in our country belongs to the fish that does not have a sense of existence, but it is very popular abroad, which is the result of aesthetic fatigue. And after fish tank culture, it is found that too much reproduction is too fast, then it will inevitably flow into the wild waters. Then over time, it gradually spread across European countries. In particular, France, the Netherlands, Hungary, Serbia and other countries have become the hardest hit areas for wheat ear fish invasions.
The most suitable water temperature for the growth of wheat ear fish is 25 to 30 °C, and the corresponding latitude range is 15 degrees to 50 degrees north latitude, and the geographical location of Europe is roughly such a range, such a good living environment, coupled with some of the above BUG-like advantages, it is impossible not to flood. The ears of wheat in Europe have no natural enemies, and the consumption of planktonic crustaceans in the water is very large, which directly leads to an increase in phytoplankton, and eventually makes the eutrophication of the water body worse. Many native species are at risk of extinction due to the predation of local fish eggs. Therefore, the wheat ear fish is already the most serious invasive exotic fish in Europe, and no suitable eradication method has been found.
It is said that the number of ears of wheat in China is also large, but why has not a large climate formed? This is also thanks to the efforts of foodies. On the one hand, there are more chickens, ducks, geese and other poultry raised in the countryside, almost every family will breed, they usually hunt small fish and shrimp in the wild waters, and the ears of wheat naturally become their rations. On the other hand, human demand for wheat ears is also relatively large, not to mention the rich nutrients of wheat ears, a plate of wheat ears of salted fish dried fried green peppers, or fresh ears of wheat wrapped in egg fried on both sides of the golden brown in front of you, can you not drool?
Therefore, China's way of treating wheat ears is very simple, that is, eating, which is an effective way to maintain the balance of species, but why don't European countries learn from it? There are many reasons, one is that they cannot eat wheat ears, the reason is that there is no good cooking skills and excessive dependence on seafood and beef; the second is that the fishing cost of wheat ears is too large, they are often hidden in water weeds, it is not easy to catch; the third is that the ears of wheat are less meat and thorny, the commercial value is almost zero, and in a society where everything is based on economic interests, no fool will do this.
It is said that the ears of wheat are a kind of fish that accompanies the good times of our childhood, and in memory they are the source of joy, when their status was very low, and people did not eat to feed the chickens. And now the value of the sudden soaring, and its contemporaries of the fish are either extinct or sharply reduced, and they are still dominant in the wild waters, after the invasion of Europe, they also swept 32 countries without mercy, claiming that the king is not afraid of the stage, the only thing that can make it afraid is the mouth of the foodie.