The state river carp is produced in Yuqiao Reservoir, Yinzhou District, Tianjin. The head is small, the back edge has no obvious bulge, and the body is slender; the back is slightly green, the body scales are golden, the abdomen is golden yellow, the pectoral fins, pelvic fins, anal fins, and caudal fins are all light red; the meat is firm, chewable and tough, and the taste is delicious.

The Yuqiao Reservoir is rich in aquatic resources and has a variety of phytoplankton and benthic organisms. The state river otter does not need to manually put the bait during the growth process, and relies entirely on these natural baits in the reservoir to grow naturally. The special geographical and geographical features of the reservoir, the superior water source environment, and the continuous ecological and humanistic protection form the unique shape of the state river otter and the taste of the meat is firm, chewable and smooth, and the taste is delicious.

Technical requirements for the quality of the river otter 1. Cyprinus carpio. 2. The water quality of the growing environment conforms to the natural waters of the reservoir in accordance with the national standards for fishery water quality. The bottom quality complies with the national standards for the environmental requirements of the aquatic products. The water body transparency is ≥120cm, the pH value is 7.0 to 8.5, and the dissolved oxygen is ≥5mg/L. Third, proliferation management Sources of fish species: (1) Natural reproduction of the original species of the river otter in the area of ​​origin. (2) Select nursery farms with seed production licenses within the scope of production, follow-up and purchase, and ensure that the source of the seed is authentic. 2. 3. Seed stocking: In mid-June, summer flower fry with a specification of 0.5g/tail is placed. 4. Bait feeding: The stocking is not fed in the range of production, and it mainly consumes natural bait in natural water. 5. Growth protection: Every year from April 15th to July 15th is the whole fishery no-fishing period. All fishing operations are prohibited during the fishing ban. A 10km2 perennial fishing area is set up within 3000m of the dam of the dam reservoir, permanently prohibiting all fishing operations. It is strictly forbidden to fish fishing fish, fish and dense mesh nets and other fishing activities that seriously damage fishery resources; it is strictly forbidden to bottom trawling, underwater sand mining and depotting to protect the fishery ecological environment. 6. Environmental and safety requirements: The prevention and control of the breeding environment and epidemic diseases must comply with relevant state regulations and must not pollute the environment. 4. Fishing can be caught during non-prohibited fishing outside the no-fishing zone. The fishing vessel is a double-single paddle fishing vessel registered in the county fishery law enforcement department and has a fishing license issued in the same year. The net is a mesh with a mesh size greater than 7.0 cm. The catching specification is ≥1000g/tail. V. Quality characteristics 1. Sensory features: small head, no obvious bulge on the back edge, slender posture; slightly green back, golden scales on the body side, golden belly, pectoral fins, pelvic fins, anal fins, caudal fin ends are light red; meat is firm, chewable and tough, Delicious. Physical and chemical indicators: crude protein ≥15.0% in muscle, crude fat ≤2%. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the scope of the production of the state rivers can submit an application for the use of the “Special Marks for Geographical Indication Products” to the Quality and Technical Supervision Bureau of Jixian County, Tianjin, which will be reviewed by the Tianjin Quality and Technical Supervision Bureau and announced to the General Administration of Quality Supervision, Inspection and Quarantine. The inspection agency of the state river raft is selected by the Tianjin Quality and Technical Supervision Bureau in the inspection institutions that meet the qualification requirements.