——Preface·]—
On the table of northerners, iron pot stew is completely a specialty, and the taste of iron pot stewed catfish makes many people unsatisfied.
Although the meat of the catfish is beautiful and the spines are few, the main eaters of this common catfish are still in the north. Southerners eat a fish delicacy that is very similar to catfish, and is a regular servant at the table like catfish.
However, this delicacy is a thing of the past. Because this raw material has become a "prison bottom fish" that needs to be released when caught.
——The "prison bottom sitting through fish" that will be released when you catch it
Catfish is a fish that has requirements for local temperature and water conditions. Because the temperature and water conditions in the north are very suitable for the survival of pangasius, there are many cuisines with pangasius as raw materials in the north.
This is not the case in the South. Although the fish that grow in the south belong to the same category as catfish, they are much more precious than those in the north. Most of the fishers in the south have never seen this catfish, and the way to identify them is very simple.
The northern catfish has a smooth back and is almost completely black. The back of this kind of catfish in the south has obvious yellow spots, and this rare species of catfish has risen to two hundred yuan a pound in the southern market.
Because the yellow dots on the back resemble the white sesame seeds on the baked cake, it has the name sesame swordfish. Because the sesame swordfish itself is very rare, it is also called "prison fish" by some senior anglers.
In addition to the obvious yellow spots on its back, the appearance of this sesame swordfish is quite deceptive. The overall appearance is similar to that of a common catfish, with a flat head and a wide and round mouth when entering the water.
The yellow spot on the back is the most easily identifiable clue for the sesame swordfish, if you catch this fish that resembles a catfish with yellow spots on its back when fishing in the wild. Without saying a word, release it quickly.
Sesame swordfish is one of the medium-sized and large fish in size, with a final recorded weight of 15 kilograms and a body length of 1 meter.
In addition to the yellow dots on its back resembling sesame seeds, the sesame swordfish is also famous because of the faint sesame fragrance that has been cooked when cooked.
In particular, sesame swordfish not only has a delicious taste, but also has a very high nutritional value. At that time, people's understanding of sesame swordfish was not perfect, so it was simply regarded as an economic fish. Large-scale fishing is carried out to satisfy the needs of diners. As a result of the hot fishing day after day, sesame swordfish is becoming scarcer day by day.
Although the sesame swordfish used to be a rare species among catfish, it was very widely distributed overall. Especially in Guangxi, Guangdong and other places, it is common to see traces of sesame swordfish activities. Later, due to the impact of human killing fishing and the greenhouse effect, the sesame swordfish changed from a frequent visitor to the national second-class protected animal, which had to make people feel embarrassed.
We have said earlier that catfish is a fish with relatively high requirements for temperature and water conditions. With the warming of temperatures caused by the greenhouse effect, and the water quality in the south has been partially polluted, the sesame swordfish has almost completely disappeared. Even though it was once widely distributed, he is no longer visible in many large and small rivers.
——Why sesame swordfish is becoming more and more scarce.]—
As sesame swordfish is becoming more and more scarce, many people will think that the sesame swordfish itself has a relatively weak reproductive ability. Because some fish are caught even after a lot of fishing. After a period of recuperation, it will slowly ease down.
In fact, the sesame swordfish is not weak in reproductive ability, and it is precisely because of its short breeding period and considerable spawning that it was once widely distributed. Sesame swordfish can spawn up to 150,000 to 30,000 pieces.
It is precisely because the sesame swordfish itself has a relatively strong reproductive ability that it still cannot get rid of the fate of the fish of the endangered species, which makes people who know about the sesame swordfish feel very sorry.
The research on the artificial breeding of sesame swordfish in China has always been illegal, because the artificial breeding technology is not as perfect as other protected animals, which indirectly makes the country's protection of sesame swordfish in the wild more urgent.
As the wild population of sesame swordfish gradually declines, the situation of sesame swordfish is only going to get worse. Now that the season is vulnerable, being able to catch a sesame swordfish is a testament to luck for fishing enthusiasts. It's a valuable experience to collect, but don't leave it to chance.
Some people don't care about the prohibition of national regulations after catching sesame swordfish, and take it directly to the market**. Of course, this kind of behavior is wrong, and once greedy, you are likely to face fines and jail time.
Some anglers will choose to use their mobile phones to take photos when they catch the rarest fish such as sesame swordfish. After that, the released ** will also be recorded in case of emergency.
The more experienced anglers know, the more they know how to prove their innocence in the face of these rare animals, and if there are anglers who catch this rare species in the future, they can also keep their certificates in this way.
- Sesame swordfish that is difficult to farm
Since sesame swordfish is a freshwater fish that is difficult to farm, the amount that can be circulated in the market is naturally very scarce. Even if the current value has risen to 200 yuan a catty, it is still priceless.
In addition to the quantity, the biggest problem in the current farming process is the control of the quality of the sesame swordfish meat. It is very difficult to improve the quality of sesame swordfish as a whole. Compared with ordinary catfish, which only has clear requirements for water conditions and temperature, sesame swordfish has its own needs for the salinity of local seawater in addition to water conditions and temperature.
Sesame swordfish can only grow faster in less salty waters. Sesame swordfish is difficult to farm, but not no one can breed it in captivity. However, compared to other organisms, sesame swordfish need to be cultivated with sufficient quality bait. At the same time, light and temperature need to be strictly controlled, so there are very few fishermen who have been able to raise sesame swordfish so far.
Many people may wonder why there are piles of fishmongers in some markets who claim to sell sesame swordfish, since sesame swordfish is not easy to farmIn fact, this is the spotted catfish that ordinary people who fool people who don't often fish and introduce it from abroad.
The spotted catfish, also known as the catfish, is an economic fish species that was introduced specifically from the United States. This fish has a very mixed diet and grows quickly, so it quickly became popular in China.
According to statistics, the output of catfish in China is more than three times the total catch of the main stream of the Yangtze River. The ** of this forktail catfish is not expensive, and the basic wholesale price is about 10 yuan a catty.
The history of the introduction of catfish in China began in 1985. After the domestication of the original species introduced from the United States, only four years later, it successfully bred a new species suitable for China's waters, and the most famous breeding site of catfish is Jiayu County, which is the country's largest catfish seedling breeding and ** base.
The original choice was made to introduce catfish because of the relatively short breeding cycle of this fish, which is easier to return on investment than other fish. Before the cultivation of catfish in China, there were more four major carp led by farmed grass carp.
Grass carp has a long history of farming, so many fishermen have their own means of raising grass carp. This has also led to the fact that the grass carp is always not high, and in order to improve profits, it will choose new fish investment and try to transform.
Although the catfish was really successfully cultivated in 1989, it was soon loved by the public and quickly promoted due to its lack of spines and abundant meat, especially the excellent fry of the catfish cultivated in China, and the catfish has been successfully exported to domestic sales.
Although the prospect of catfish farming is widely promising, there are still essential differences between catfish and sesame swordfish. The beard of a sesame swordfish is naturally white, and black whiskers like the catfish are naturally problematic from time to time. Due to the large difference between sesame swordfish and catfish, you still need to be careful when purchasing.
-- Epilogue·] —
While advocating the preservation of the essence of the sesame sword, we are protecting the natural ecosystem, and our planet has been facing a variety of environmental problems, not only climate change, but also biodiversity loss. Protecting the ecological balance and halting biodiversity loss is both a safeguard for the planet and for humanity itself.