Some time ago, in the Guanlan River in Shenzhen, there were anglers who caught seven or eight big fish, the largest weighing more than ten pounds. However, the anglers were not excited, because none of the big guys they caught were given to pedestrians.
It turned out that the big guys caught by the anglers were the Egyptian bearded catfish, which the locals also called the bearded fish. It is believed that this fish in the Guanlan River is simply not eaten, and perhaps this is the reason why the bearded catfish flood in the Guanlan River.
<h1 class= "pgc-h-arrow-right" > eight "bearded" Egyptian bearded catfish</h1>
Egyptian bearded catfish, also known as Egyptian pond lice and leather beard catfish, is native to the African Nile river system. Compared to the native bearded catfish, the Egyptian bearded catfish has a flatter head, small eyes, well-developed tentacles, and a longer body.
Egyptian bearded catfish has strong environmental adaptability and fast growth rate, which can grow to 2 kg a year, and the largest adult fish can grow to more than 10 kg, which is a freshwater fish that is very suitable for farming.
In 1981, China introduced the Egyptian bearded catfish for trial breeding. In 1982, the Egyptian bearded catfish was successfully bred in Guangdong's freshwater breeding farm. At present, it is cultivated in many areas of South China and Central China.
<h1 class= "pgc-h-arrow-right" > the septic tank incident has ruined the reputation of the Egyptian bearded catfish</h1>
Egyptian beard catfish have more delicate flesh and oil, coupled with a relatively cheap price, which is very suitable for grilled fish. More than a decade ago, grilled fish made with Egyptian bearded catfish was a street food that was evocative.
The fundamental problem of the Egyptian bearded catfish is the breeding method, and we mentioned earlier that the Egyptian bearded catfish is highly adaptable to the environment. In order to pursue economic interests, many farmers have adopted very extreme breeding methods.
Many farmers continue to increase the breeding density, while increasing the amount of feed, in order to promote the Egyptian beard catfish can grow in a short period of time, which also leads to the quality of Egyptian beard catfish continues to decline, and slowly it is not liked by consumers.
The Egyptian bearded catfish in the wild is even more inedible, because in the environment with very poor water quality, the Egyptian bearded catfish can also survive. A building in Cen Xi City, Guangxi Province, often makes strange noises in the middle of the night, and even rumors of "haunting".
Later, people opened the septic tank and found that the sound was actually made by several Egyptian beard catfish in the septic tank. I can't imagine how people who have eaten Egyptian bearded catfish feel when they see this news. Since then, the reputation of the Egyptian bearded catfish has also plummeted.
<h1 class="pgc-h-arrow-right" > the impact of Egyptian bearded catfish on the local ecological environment</h1>
Escape from farms or artificial releases have led to the entry of Egyptian bearded catfish into natural waters. Due to its strong environmental adaptability, the Egyptian bearded catfish began to camp in natural waters.
Egyptian bearded catfish have a very strong reproductive ability and can reach sexual maturity in 7-10 months, and adult female pond bream can breed 4-5 times a year, laying 100,000-200,000 eggs at a time, properly obtaining a "fertility machine".
Egyptian pond mackerels are very fierce and have few natural predators, so they will soon become infested. Egyptian pond mackerel breeds in large numbers, squeezing the living space of other native fish, and even preying on native fish seedlings, leading to the extinction of native fish and bringing ecological disasters.
Egyptian pond catfish is different from most invasive fish, such as tilapia, which has higher water temperature requirements for the living environment and can only invade parts of the southern waters, while egyptian bearded catfish can tolerate low temperatures of 5-10 ° C at the minimum, so it can expand to further north.
<h1 class="pgc-h-arrow-right" > what to do if you catch an Egyptian catfish</h1>
The angler mentioned at the beginning, the Egyptian bearded catfish caught was released directly because no one wanted it. In fact, it is still not recommended that you do this, because the Egyptian bearded catfish is an invasive species after all, and after being caught, it can be buried in situ or directly thrown on the shore, which also contributes to the elimination of invasive species.
Of course, it is also necessary to remind everyone that if you catch Egyptian bearded catfish in waters with poor water quality, it is best not to eat it. Because the Egyptian bearded catfish will enrich harmful substances such as heavy metals in the water, it will have a certain impact on the human body after eating.
<h1 class="pgc-h-arrow-right" > written at the end</h1>
The invasion of many alien species is breeding escape or artificial release, these invasive species will cause great damage to the ecological environment, so we must be cautious. At the same time, for the Egyptian bearded catfish, if it is caught in water with poor water quality, it is best not to eat it.