The puffer fish has been eaten for more than two thousand years. In ancient times, Nantong was from the Western Zhou Dynasty to the Eastern Zhou Dynasty, three years (the first 473 years) belonged to Wu State, and later the country destroyed Wu State, so it belonged to Vietnam. At that time, there was a custom of tasting puffer fish. At that time, the puffer fish was popular, and Nantong’s rich puffer fish resources made it possible for people to taste the wonders of the world.

Quality characteristics The germplasm features are obvious, the color is bright, the body is full; the dark brown stripes on the back are obvious, the orange band on the side is clear, the abdomen is white; the outline of the gonad is obvious, the fins are complete; the swimming is fast and the reaction is quick. Landmark Geography Nantong belongs to the mid-latitude zone, the north subtropical ocean monsoon humid climate zone, mild climate, four distinct seasons, the Yellow Sea in the east, the Yangtze River in the south, just at the intersection of the rivers and the seas, called the gateway of the rivers and seas, and the rivers, seas and rivers in the territory. It has abundant and fertile water resources, mild and pleasant climatic conditions, salty and suitable water environment, rich in various aquatic resources, especially fish, shrimp, crab, snail, aquatic insects, aquatic plants, and horns. The copepods are inexhaustible. The pufferfish that spawned and spawned here have created the most suitable living conditions. It is the most ideal breeding ground for the Yangtze River pufferfish. History and culture The puffer fish has been eaten for more than two thousand years. In ancient times, Nantong was from the Western Zhou Dynasty to the Eastern Zhou Dynasty, three years (the first 473 years) belonged to Wu State, and later the country destroyed Wu State, so it belonged to Vietnam. At that time, there was a custom of tasting puffer fish. At that time, the puffer fish was popular, and Nantong’s rich puffer fish resources made it possible for people to taste the wonders of the world. The folks have circulated such legends: After Wu Wangfu’s victory over the country, the Yue Wang Gou practiced the beauty of Xi Shi. One day, the husband was surrounded by Xi Shi in his arms. He tasted a puffer fish, and his testis was as white as milk, plump and delicious, and the entrance was The feeling of fascination and fabulousness, I don’t know how to describe it, and casually said: "Love Ji Yuyu is comparable!" Since then, "Xishi Shiru" has spread in the folk. Brand Construction Jiangsu Zhongyang Group Co., Ltd. is the only unit approved to use the Nantong Yangtze River Dolphin Geographical Protection Product Mark. Zhongyang Group is a national key leading enterprise, the president of the China Fisheries Association's puffer fish branch, the director of the Jiangsu Yangtze River Characteristic Fish Technology Innovation Strategy Alliance, and the director of the Jiangsu Province puffer fish research committee. Zhongyang Group adheres to standardized production and industrialized operation, and builds the world's largest puffer fish breeding base. It annually cultivates 11 million tails of Nantong Yangtze River pufferfish, and has formed research, breeding, breeding, feed production, product sales and catering services for Nantong Yangtze River Dolphin. The complete industrial chain of deep processing, e-commerce and tourism. The Nantong Yangtze River Dolphin cultivated by Zhongyang Group was awarded the famous brand product of Jiangsu Province. The “Zhongyang” trademark was recognized as the famous trademark of Jiangsu Province and the well-known trademark of China. The “Zhongyang Hepiular Banquet” won the honor of “Chinese Banquet”. Zhongyang Group has established a unique marketing system, which is carried out in various forms such as direct chain, franchise chain, online sales and deep processing of products. It has developed more than 200 franchise chain stores in major cities across the country, and established a national franchise chain flagship store. Established the high-end food and beverage outlets of the Yangtze River and Dolphin in Zhongyang Nantong, and established the high-end market position of the products. In addition, the use of domestic famous shopping website platform for the Yangtze River rare fish gift box network sales, directly to the end consumers, has achieved good economic benefits and brand promotion, expanding the market potential of the brand. In order to facilitate visitors to taste the company's products, the company signed contracts with 32 local high-end hotels to cook and sell the company's puffer fish. Digging into the high added value of products, marching into deep processing of products, developing semi-finished products, cooked products, and high-end gifts are deeply loved by customers, realizing the industrialization from fresh products to the table to the family; Zhongyang's industrial characteristics have attracted many industries. People and food lovers come to visit, travel and taste. From 2010 to 2012, the Nantong People's Government and the Jiangsu Provincial Tourism Bureau hosted the 3rd “China Hai'an Puffer Festival” and “Puffin Food Forum” jointly organized by the CPC Hai'an County Committee, Hai'an People's Government and Zhongyang Group. Tourism promotion. During the Puffer Festival, more than 10,000 tourists gathered to participate in the “10,000-person puffer banquet”, which attracted the attention of major media and greatly enhanced the popularity of the Nantong Yangtze River Dolphin. Hai'an County has thus won the title of “the hometown of Chinese puffer fish” in the country. In order to further enhance the popularity and reputation of Hai'an as the “hometown of Chinese puffer fish”, the brand of “World Food, Hai'an Blowfish” was launched to promote the development of tourism and other related industries. Hai'an County Tourism Bureau publicly collected “Foten Dolphin” through the “Yangtze Evening News”. "Baby" cartoon image design, the collection is consistent with the characteristics of China's Hai'an Zhongyang pufferfish, and in line with the modern aesthetic cartoon image, the event has received wide attention from all walks of life, received more than 2,000 creative works. In addition, Zhongyang Group continued to publicize and set up a large number of outdoor advertisements, bus advertisements, and TV advertisements, and invited the People's Daily, Xinhua Daily, Oriental TV, and the Central Multiple TV Stations to report and publicize the media, and hold photo contests and essays for the society. Various activities such as competitions have achieved good results and improved the visibility and influence of the “Zhongyang” brand and the Nantong Yangtze River Dolphin.

Nantong Yangtze River Dolphin (Aquaculture) Quality Technical Requirements (1) Variety. Dark-striped oriental scorpion. (2) Natural germplasm protection areas. The Nantong Yangtze River Dolphin Germplasm Protection Zone is between 31°41' and 32°43' north latitude and 120°12' to 121°55' east longitude. (3) Seedlings. Breeding qualified seedlings in the national puffer fish breeding field. 1. Artificial reproduction: At the beginning of March, the pure broodstock with pure physique is selected to simulate the natural spawning environment. The water body is gradually adjusted to the river water environment by the seawater environment. The bait is mainly based on fresh bait such as shellfish, miscellaneous fish and shrimp. Supplemented by water flow stimulates gonadal development. In the second half of April, two injections were used to induce labor. The dry or wet insemination is carried out, and the fertilized eggs are incubated with a hatching bucket. 2. Fry breeding: After hatching, the larvae are opened with local freshwater rotifers, and after one week, they are moved into the fry breeding pond for fry breeding. The fry breeding pond has an area of ​​1000 m2 to 3000 m2 and a water depth of 1.2 m to 1.5 m. The rotifers and other bait in the pool are rich in biomass, and the larvae, leeches, fish, crickets and other meat mites and special feeds for puffer fish fry are gradually added as the fry grows. 3. Fish Breeding: Simulate the natural growth of the river water environment for all freshwater cultivation. The feed is made of special compound feed. The crude protein content of the compound feed is 48% to 50%, the crude fat content is 4% to 5%, and the daily feed amount is 3% to 5% of the fish weight. It is fed three times a day in the morning, in the middle and in the evening. Timing, fixed point, quantitative. (4) Breeding. 1. Breeding mode: Simulating the biological characteristics of the Yangtze River porpoise in Nantong, using the three-stage culture method of “Jiang-Hai-Jiang”. 2. Aquaculture environment: The aquaculture area is located at the mouth of the Yangtze River, the junction of rivers and seas, and the rivers, seas and rivers are rich in water resources. The rivers and sea water resources are available in the same area and underground, and the aquatic resources are rich and unique. 3. Greenhouse cultivation: From November to April, simulated seawater cultivation in the greenhouse. The fish pond is an indoor mud sand bottom cement pool. The shallow water of the basement is used to gradually adjust the salinity of the pool water to 10‰ to 15‰, and the water temperature is 18°C ​​to 25°C. Appropriately increase the fat content of the feed. Strictly disinfect the water body and cut off the toxin-producing food chain. 4. Wild domestication: wilderness domestication in ponds from May to October. The domestication time is no less than 6 months. The pond has an area of ​​6,000 m2 to 10,000 m2 and a water depth of 2 m to 3 m. The pH is 7.4 to 8.5, the temperature is 20 ° C to 35 ° C, the water temperature is 18 ° C to 33 ° C, the dissolved oxygen in water is above 5 mg / L, and the transparency is required to be 20 cm to 25 cm. The feed is mainly based on compound feed, and animal feed such as river otter, small fish and shrimp, and freshwater snails are appropriately added. . 5. Ecological control: Healthy breeding is carried out through measures such as optimizing fish species, improving the environment, strengthening nutrition, and classifying and sparse. Ecological disease prevention through polyculture of fish and shrimp, use of microecological preparations and Chinese herbal medicines. (5) Quality and technical requirements. 1. Sensory characteristics: the germplasm features are obvious, the color is bright, the body is full; the dark brown stripes on the back are obvious, the orange band on the body side is clear, the abdomen is white; the outline of the gonad is obvious, the fins are intact; the swimming is fast and the reaction is quick. 2. Physical and chemical characteristics: protein ≥ 17.50%, 0.55% ≤ fat ≤ 0.70%, total amino acid ≥ 17.00%. 3. Safety: After the acute toxicity test, it is non-toxic. 4. Use puffer fish poisoning and healthy farming techniques. 5. Use Nantong Yangtze River Dolphin special feed formula. 6. With a standardized chain operation system, the products are sold in a chain operation mode.

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Producers within the protection scope of Nantong Yangtze River Dolphin (culture) GI products may submit an application to the Nantong Quality and Technical Supervision Bureau of Jiangsu Province for the use of the \"Special Mark for Geographical Indication Products\", which is approved by the General Administration of Quality Supervision, Inspection and Quarantine.