Qichuan black scorpion body color dark green, the belly gradually fades, the pattern is like python skin, the top of the head has seven-star-shaped markings, similar to the Chinese character "夔" shape. There are small black spots on the caudal fin. The dorsal and anal fins have black and white patterns. The maximum body length is more than 80 cm and weighs more than 10 kg. In recent years, the conservation of aquaculture in Qichuan and the development of scenic spots have complemented each other and complemented each other, making it not only a delicious food for many tourists, but also a unique cultural and historical landscape.

Qiachuan Wusong is one of the well-known specialties in Heyang County, Weinan City, Shaanxi Province. It is a well-known Wuhua germplasm resource protection area in China. Nowadays, Qichuan Wujing has successfully won the title of “Geographical Mark Protection Product”. Qichuan black scorpion has strong vitality and adaptability to the environment, whether it is lakes, reservoirs, rivers, creeks, ponds or paddy fields, channels, even swamps, water pools, rafts, etc. Growing and multiplying. They are not only delicious but also grow faster, which is in line with the production requirements of “first year fish species, two years old fish”. The black mulch has a high meat content and no fine spurs between the muscles. It is one of the fish products for all ages and more, and there is nourishment for women. The total area of ​​the Wusong National Aquatic Germplasm Resources Protection Zone in the Qichuan section of the Yellow River is 25,800 hectares, of which the core area is 14,300 hectares and the experimental area is 11,500 hectares. The special protection period for the core area is from March 10 to August 31 of each year. The protected area is located in the Yellow River Basin in Heyang County, Weinan City, Shaanxi Province. It is adjacent to the main river channel in the east of Shanxi Province, west to the Huangtu Peak, south to the Huayuan Township of Dayi County, and north to the Zhichuan Town of Han City. The main river course of the Qichuan section and the state-owned tidal flat along the river wetland. The range is between 110°24′-110°27′ east longitude and 34°59′-35°26′ north latitude. The total length of the river channel in the core area is 40 kilometers, ranging from 110°25′-110°27′ east longitude to 34°59′-35°26′ north latitude. The experimental area is located in the west of the flood control dam to the foot of the Loess Plateau, including the Yulin Village of Bailiang Town, the Taili Village of Fangfang Town, the Qiachuan Town, the County Fishery Base, and the Quanxingzhai Village of Majiazhuang Township. The area is in the east longitude. 110°24′-110°25′, north latitude 34°59′-35°26′. The main protection objects are black mullet, and other protected species include the Yellow River otter, the Yellow River otter, the yellow mullet, and the highland carp.

Qichuan Wujing quality technical requirements I. Seed source Wuanna (Channa argus) Second, the origin requirements 1. Water requirements: the main river water of the Yellow River Qiachuan section and the wetland tidal flat along the river. 2. Water quality requirements: water depth 1.5m to 3.0m. The dissolved oxygen amount is ≥3mg/L, the pH value is 6.5 to 8.5, and the water body transparency is ≥30cm. III. Breeding management 1. Sources of seedlings: Seeds that are naturally propagated from natural waters, artificially propagated and released, and fish farms that have seed production licenses within the protected area. 2. Farming methods: natural waters grow naturally. 3. Stocking time: From late March to early June, when the water temperature is above 15 °C. 4. Stocking density: The proliferation and release density is 750 to 1200/ha. Specifications: body weight 150g/tail, body length 10cm to 15cm. 5. Environmental and safety requirements: The prevention and control of the breeding environment and epidemic diseases must comply with relevant national regulations. Fourth, fishing and fishing specifications: weight ≥ 800g / tail, body length of 40cm or more. V. Quality Features 1. Sensory characteristics Body color dark green, abdomen fades, the pattern resembles python skin, and there are seven star-shaped markings on the top of the head. 2. Physical and chemical indicators, project value protein, g/100gu003e18.5 fat, g/100% u003c216 kinds of amino acids (g/100g)u003e15 3. Safety and other quality technical requirements: product safety and other quality technical requirements must In line with relevant national regulations.

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Producers within the scope of Qiuchuan Wusong's production area may submit an application to the Heyang County Market Supervision Administration for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Shaanxi Provincial Bureau of Quality and Technical Supervision and reported to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The inspection organization of Qichuan Wuyi was selected by the Shaanxi Provincial Bureau of Quality and Technical Supervision in the inspection institutions that meet the qualification requirements.