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This shrimp, called Roche shrimp, is native to Southeast Asia, mainly in Thailand and Myanmar, and generally appears in the Mekong River Basin, which is rarely seen in China.
Roche shrimp can grow up to 1 pound, which looks extremely fat, because there are no natural enemies, breed quickly, and have tended to flood in the Mekong River Basin.
However, some fishing friends caught Roche shrimp in Jiangsu, almost the size of the adult man's palm, just two pliers have more than ten or twenty centimeters, looking a little "scary", therefore, some netizens called Roche shrimp "super shrimp".
Why does Jiangsu have Roche shrimp? Could it be that shrimp from the Mekong Basin have flooded into our country? Which shrimp is more delicious than crayfish?
First, let's understand some of the characteristics of Roche shrimp.
<h1 class="pgc-h-center-line" data-track="12" > the shape characteristics of Roche shrimp:</h1>
Roche shrimp belongs to freshwater shrimp, known as "freshwater shrimp king", the river "small green dragon", in addition to its large size, its appearance is actually very recognizable.
The shrimp body is crystal clear and shiny (there are also grayish yellow), the color of the male shrimp's tongs and shrimp feet is a faint sky blue (there are also some bluish brown), the color of the shrimp whiskers and the shrimp body are basically the same, very ornamental, like a natural work of art.
Roche shrimp grow very fast, and male Roche shrimp fry grow faster and have a very short growth cycle.
Male Roche shrimp can generally grow to 40 cm, the heaviest can exceed 600 grams, females are generally slightly smaller, only about 25 cm, weighing about 200 grams;
<h1 class="pgc-h-center-line" data-track="56" > the growth conditions of Roche shrimp:</h1>
Roche shrimp like to be warm, the water temperature requirements of 20-34 ° C, like to feed on crustaceans, such as Fushou snails and sand silkworms, is an omnivorous carnivore. It is afraid of bright lights and has the habit of killing each other and dominating the territory.
In terms of China's current river conditions, it is somewhat unrealistic to want Roche shrimp to grow freely in the river;
At present, China's Roche shrimp is basically imported and cultured, and most of them are farmed in Southern Regions such as Guangdong;
Due to its warm, summer is the best season to eat Roche shrimp, but also the cheapest season, after October there is basically no Roche shrimp on the market, even if there is a price is very expensive, because it can not withstand the cold temperature, most of them will die;
Moreover, the protein content of artificially farmed Roche shrimp is also very high, basically reaching more than 15%. Among them, the animal protein requirement is 20%, and the plant protein requirement is 17-18%.
If the protein content of the food fed to Roche shrimp is lower than the required, the shrimp will be greatly reduced in meat quality and taste.
It is reported that in Taizhou, Jiangsu Province, nearly 6,000 kilograms of Roche shrimp were farmed, but great losses were caused due to typhoons and other reasons.
The Roche shrimp that appears in Jiangsu has a high probability of "escaping" events due to typhoons during the breeding process.
<h1 class="pgc-h-center-line" data-track="58" > the nutritional effect of Roche shrimp</h1>
Roche shrimp is rich in magnesium, protein and a variety of vitamins, studies have shown that 100 grams of Roche shrimp, contains 20.6 grams of protein, has a great protective effect on the cardiovascular system, high blood pressure and high cholesterol also has a reducing effect;
Roche shrimp is also rich in calcium and phosphorus, which is of great benefit to pregnant women and children, and can also be milked, suitable for people who are weak and have just recovered from serious illnesses, and are very good supplementary foods;
At the same time, the fresh Roche shrimp meat is tender, Q elastic, large, thin skin and thick flesh; mature Roche shrimp head has a full shrimp yellow, more than the ordinary shrimp content, and eat a hairy crab yellow taste, deeply welcomed by Cantonese!
Roche shrimp because of the small head and long body, shrimp meat is far more than crayfish, shrimp yellow is also the most shrimp, and the meat is sweet and crisp and refreshing, white seared, oil stewed are very good, the taste is much better than crayfish.
Many people in order to try to be fresh, do not hesitate to personally run to the Mekong River Basin to fish for shrimp, after all, a river shrimp that can reach three or four or even 1 kilogram is rare; some people even hope that Roche shrimp can also be "flooded" in China, so that you can eat a lot.
<h1 class="pgc-h-center-line" data-track="61" > the current problems in artificial breeding of Roche shrimp in China</h1>
From the growth conditions of Roche shrimp, it can be known that it is relatively harsh on the environment and temperature, and the introduction of aquaculture in China has also encountered many problems: seed degradation, slow growth, low survival rate and difficult to distinguish between good and bad.
Roche shrimp generally live at the bottom of the pond, many farmers in the pond after cleaning the pond neglected the important step of water quality fertilization, resulting in insufficient water nutrients in the pond in the early stage of breeding, can provide less food for shrimp fry, reducing the survival rate and growth quality of shrimp fry.
When the shrimp fry grow larger and larger, out of the psychology of anxious to make a profit, farmers invest more and more nutrients, and often there will be a problem of excessive input of animal bait, which directly leads to the destruction of water quality, the phenomenon of early maturation of shrimp, and faster entry into the breeding period, which seriously affects the quality of shrimp;
Coupled with the high temperature in summer, various bacteria multiply in large quantities, aggravating oxygen consumption and causing water lack of oxygen, and water quality is further destroyed.
Farmers often choose to change the water in large quantities, which will cause fluctuations in water temperature, which will have different degrees of impact on the meat quality and growth of Roche shrimp;
If farmers do not change the water, in the absence of oxygen, it is easy to cause the liver load of shrimp to increase, and the symptoms of "dripping star" appear, that is, hepatobiliary syndrome.
Some farmers may choose to clean the water quality by disinfection, but this will not improve the water quality, but will make the water body enter a sub-healthy state, and the shrimp will become weaker and weaker.
Therefore, in order to improve the survival rate of domestic Roche shrimp, we must first solve the above problems.
First of all, water quality fertilizer is a must, although it takes a certain amount of time and cost, but it can maximize the improvement of the environment at the bottom of the pond, inhibit the breeding of bacteria, improve the stability of the water body and self-purification ability, so that the water quality remains stable and the nutrients are balanced;
Secondly, increase the bait in an appropriate amount, and ensure the nutritional balance of the bait, reduce the use of insecticides, and enhance the disease resistance of shrimp;
Finally, in the bait, you can increase the ingredients that can promote the reproduction of beneficial bacteria in the shrimp intestine, such as bile acid, so that the liver function of the shrimp tends to be stable, protect the intestinal health, and enhance the detoxification ability and immunity of the shrimp.
Because of these various reasons, the price of farmed Roche shrimp in China is also relatively expensive, and many people have missed this delicious dish because of this.
Have you ever seen Roche shrimp? What other ways do you know about growing Roche shrimp? Do you think it's better than a crayfish? Welcome to leave a message and communicate with us.
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