85_85437 Don't blow or black, it's hard to have a zero manuscript, there is still a party tonight, I got home at half past eleven, the code word to this moment, 2:21! I don't say this to complain about being tired, but to explain the reason why it's a little late, work hard, keep working hard! ****

Tuna farming is one of Japan's proudest fisheries techniques, and they are the only ones in the world who have mastered tuna farming techniques.

This technology, like 'Wagyu' farming, is top-secret in Japan, and if it weren't for Tezuka's bent desire to curry favor with Qin Shiou, they would certainly not have been able to visit Izu Shichishima.

Of course, Qin Shiou didn't think about visiting at all, he just wanted to come and how to take away these bluefin tuna.

Bluefin tuna is one of the most prized fish in the genus Tuna, but it is also divided into several subspecies, Atlantic bluefin tuna, Pacific bluefin tuna, etc., the most precious of which is Atlantic bluefin tuna.

The bluefin tuna in the waters of Japan is a genus of the Pacific Ocean, Qin Shiou has observed them in the Tsukiji market, and he can't see any difference between them and the bluefin tuna in his own fishing grounds.

The technology of cultivating bluefin tuna in Japan can be traced back to the 70s of the last century, when the famous University began research, and in the 80s, wild fish were stored and reared as adults, but it was difficult to expand the scale because of the lack of fry in the wild.

At the beginning of the 21st century, there was a breakthrough in farming technology, and University finally realized whole fish farming, which means that even the fry are artificially propagated.

Although the total shipments are not very large compared to wild tuna. However, the breeding technology has been relatively reliable, and the shipment volume is also increasing year by year. At this point, tuna farming has become a real and reliable business.

Farmed tuna is known as kindai-tuna in Japan. That is, near the big tuna, the appearance of this fish is similar to that of wild fish, but the taste of the meat is poor, the activity of farmed tuna is not enough, the meat fat content is too low, and the taste is not good.

However, the unit price of near-giant tuna is not much lower than that of bluefin tuna of the average wild grade. The reason for this is that the cultivation of near-large tuna is very costly. It's more expensive than catching a wild fish.

When Qin Shiou took a boat to Lidao, he knew why tuna farming needs to consume such a big price, this farm is not a small pond, but a circle of artificial super farms built around Lidao!

About seven or eight kilometers from the bottom of the island, there are prestressed concrete pipe piles connected one by one, which are similar to the piles used by Qin Shiou when he built the high-pile wharf. But the length is much longer, and it is a full 200 meters after connecting it!

There are at least 20 such piles around the island, and these piles are skeletons with fishing nets attached to them. In this way, the nets circle the island of Leigh and enclose the entire sea, forming the so-called tuna farm. In addition, countless thick and thin water pipes stretch out of the island into the ocean, and the oxygen generator roars on the island. Oxygen is continuously fed into the seawater......

Seeing this scene, Qin Shiou understood why Takata Tezuka wanted to cooperate with him so much to catch tuna, and the Japanese love for this thing Cheng dù had become Cheng dù. It's a lot of money to eat it.

Qin Shiou asked Nishimura Ling the price of these pipe piles, and Nishimura Ling said: "One is about 140 million yuan, and it can be used for 40 to 50 years." ”

"It's too expensive, isn't it, just to study tuna farming?" Qin Shiou asked in surprise, 140 million yen is almost 7 million yuan, and 20 is 140 million yuan.

Nishimura said, "The value of scientific research is unlimited. If tuna farming technology is fully mature, do you know how much money we can save in Japan? ”

Qin Shiou smiled bitterly: "As long as you don't eat this kind of fish." Isn't that money saved? ”

Nishimura Ling was anxious when he heard this, and said, "How can you not eat it?" What's the point of living if you can't eat this delicious food? ”

Qin Shiou squirted out a mouthful of old blood!

Winnie looked at the fishing nets around her and asked curiously, "Nishimura-san, are there no holes in these fishing nets?" If there is a loophole, how will the tuna not escape? ”

"There are definitely loopholes, but our research has found that tuna swim all the time in order to survive, and this lifestyle has led them to swim blindly, and they won't look for loopholes and leave unless they happen to get out," Nishimura explains. ”

Qin Shiou understands this, the bluefin tuna swims very fast, can reach a speed of 70 kilometers per hour, and if this speed hits something, it will basically be a death. Therefore, they form an unconditioned reflex, and when they find an obstacle, they immediately swim in different directions, and they will not blindly bump into it.

It's a pity that the Japanese ran into Qin Shiou this time, bluefin tuna is naturally afraid of obstacles, but he Qin Daguan can change the nature of these fish!

Poseidon consciousness quickly turned around on the island, Qin Shiou encountered some bluefin tuna, but most of them were juvenile fish, that is, ten or so kilograms, forty or fifty kilograms, more than one meter long is rare, this kind of little guy has no value.

This also shows the character of the Japanese, as at the last auction at Tsukiji Market, many bluefin tuna caught from various seas were only 20 or 40 kilograms.

But look at their own farms, tuna is not caught until it is ripe, and it is typical not to treat other people's children as minors.

To the south of the island is the new island, the farm of this island has a stake in the village of Kiyomura, Nishimura Ridge can take Qin Shiou and his party to visit the inside of the farm.

When the boat approached the pier, two men in security uniforms came up to search the body, and they were not allowed to bring cameras, mobile phones, or video recorders to the island, naturally to prevent anyone from taking pictures of tuna farming techniques.

Qin Shiou didn't want these people to be searched, so he simply didn't go up, and let Nishimura Ling take them around.

The ship was turning, and the sea god's consciousness was also turning, and when he arrived at the Forbidden Island, he had a surprise discovery.

The pillars of the pipe piles on the Forbidden Island are longer, extending to a depth of 300 meters in the ocean, and the tuna here are large and small, but the overall is still on the small side. But these fish swim faster and have a spirit of their own, unlike the lazy tuna on other farms.

Qin Shiou tapped on the side of the West Village and found the answer, as he guessed, the tuna in this farm were all wild fry. If you can catch a wild bluefin tuna, bring it back before you die, and put it on the farm of the Forbidden Island.

The sea god's consciousness was rotating inside, and Qin Shiou looked at it, there were about more than a hundred bluefin tuna in it, which was less than other farms, and there were at least more than two hundred in other farms.

This has to do with the nature of bluefin tuna, as they often move at high speeds, and if there are too many of them and they are not in a single population, they are prone to impact events. Wild fish swim faster than farmed fish, so they are cultured at a lower density.

The waters controlled by the sea god consciousness began to collect in a circle from the periphery, and when they encountered the tuna, they immediately controlled the tuna and gave them a target, swam to the North Atlantic, and went straight to the Daqin fishing grounds. (To be continued).