Introduction: Are the " bamboo shoot shell fish " that were common in rural areas in the past an alien species? Why hasn't it spread in the country?
my country has a very rich variety of fish resources, especially in the southern region. Because of the abundant water resources and the low temperature in winter, it is very suitable for the survival of most fish.
In recent years, some economic fish have been introduced from different countries, because most of them are not tolerant to low-temperature environments. They are currently mainly cultured in Guangdong, Guangxi, Fujian, Hainan and other places. Even though some have spread in the wild environment, it is difficult for to reach northern areas. The reason is that the northern winter is too cold, and they will freeze to death when the river freezes.
Do you know about bamboo shoot fish? This is probably a fish that many southern friends are familiar with, because in the past, this small fish was also found in many rivers, lakes and reservoirs. In the past, rural children often caught it for food, and in recent years, it has become a common economic item in the market. fish.
is also so common that some people even think it is a native fish in my country. In fact, it is an alien species. If this is the case, then why is the bamboo shell fish not as prevalent in the country as other invasive species? Let’s find out together!
The bamboo shoot fish with a weak sense of existence
In the past, the author did not believe that the bamboo shoot fish was an exotic species because I often caught and fished it in the wild when I was a child. It wasn't until after some in-depth understanding that I was convinced that was really an alien species, but it just didn't have a strong sense of existence.
Bamboo shoot fish is a common name for it among Chinese people. Its scientific name is Jiantang snakehead, which is one of the gobies . The hometown of this fish is in countries such as Southeast Asia and Australia, and it is also a relatively rare freshwater fish there.
The introduction of cultured bamboo shell fish into my country was in the 1980s. At that time, it was mainly cultured in Guangdong, Fujian and Guangxi provinces. Because the local environment often experiences typhoons, many bamboo shoot fish from farms have escaped into the wild, and its adaptability is very strong, so this fish can soon be found in many waters in the south.
The reason why it is often called bamboo shoot fish in China instead of its scientific name, Jian Tang Snakehead, is because it looks very special. This fish has a cylindrical body, a big head and a small tail, and looks very much like a bamboo shoot. Even the patterns on it are somewhat similar, so it is named Bamboo Shoot Fish. It is easy to remember and spread, and it is very down-to-earth.
Many people in China often regard it as an indigenous fish. First of all, it is very similar to some indigenous fish in my country, such as native fish , old man fish , sand tiger fish, etc. The appearance of fish is very similar. It's hard to tell if you don't look carefully.
However, fish native to our country are generally not big in size and are all small fish. The bamboo shoot fish can grow to a weight of one or two kilograms, and the size of the cultured fish will be larger. Another characteristic of this fish is that its skin color can change and turn black under stress. This is also one of the biggest differences between bamboo shoot fish and some indigenous fish in my country.
In addition, this fish is not as harmful as invasive species such as tilapia , crayfish, scavenger , mosquito fish , and the number is relatively small. It is only distributed in small quantities in some waters in the south, so It has always had a low sense of existence, which has also led to many people not knowing that it is an alien species.
Why is bamboo shell fish not widespread in the country?
It’s a bit strange to say that the bamboo shell fish is one of the few fish that has failed to invade. It has been almost 40 years since it was introduced into China as an economic fish in the 1980s. However, this kind of fish is still mainly artificially cultured in China. Although there are also wild fish, there are not many. Only in some waters in the south are there a very small number of wild bamboo shell fish scattered around. Why is this?
In fact, the vitality of the bamboo shell fish is still very strong. It can basically survive in the southern waters, and its food sources are also wide. This kind of fish is a typical carnivorous fish. It mainly feeds on various small fish, shrimps, crustaceans, mollusks , aquatic insects and insect larvae in the water body. and it also has strong resistance to oxygen and hunger, which also provides life support for the bamboo shell fish in disguise.
Moreover, the reproductive capacity of bamboo shoot fish is not weak. It reaches sexual maturity at the age of 2, and can reproduce 2-3 times a year. The relative number of eggs it can carry is 70-220. Of course, the bigger it is, the more eggs it will lay. The more. And after the eggs are laid and hatched, the male fish will guard the vicinity.
But even so, the bamboo shell fish has not shown its super invasive characteristics like other invasive species, because it also has many natural enemies in China.
The first one is that there are many natural enemies in nature . This kind of fish is a carnivorous fish and looks fierce. However, there are many fish that like to eat fish in domestic waters. It is not too big, so it will naturally be preyed on by other carnivorous fish, such as snakes. Fish , fish, etc. Even its eggs may be eaten by other small fish.
The second one is overfishing by humans. The meat of bamboo shoot shell fish is very delicious and has high nutritional value. It is a very popular high-end fish in the south. Even if it is farmed, it will sell for more than 100 yuan per pound. If it is wild, the price is even higher, so many people will catch it in large quantities in order to taste it or catch it and sell it for money. The last point of
is that it is not resistant to low temperatures. Bamboo shoot fish can adapt to growth in most waters in the south, but it is not tolerant to low temperatures. When the temperature drops below 10°C, it may freeze to death. In many places in the south, the temperature may drop to 0℃ in winter, so you will be frozen to death in winter.
In addition, the bamboo shell fish does not have strong preying ability. Although it is a kind of goby, it will not take the initiative to attack. It usually waits until food passes by before preying on it. Those with weak preying ability are Generally not easy to flood.
In addition, the ecological environment of many waters has been polluted to a certain extent in recent years, which has further compressed the living environment of the bamboo shell fish, and naturally it is more difficult for it to overflow.
Actually, just because it is a delicious and high-end fish, it is unlikely to become widespread. Because our country has a large population and a lot of "foodies", it is destined that the bamboo shell fish is unlikely to become widespread.
Dear friends, are there many wild bamboo shell fish in your hometown? Do you like to eat? Welcome to leave a message for discussion!
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