2. Some soft parts of snail's tail are intestines, which are areas where excreta and internal organs are concentrated. This part is easy to parasitize some harmful substances and parasites, so it is not recommended to eat.

3. Oncomelania: Oncomelania, an animal of the genus Oncomelania.

4. The snail shell is large, with a height of 6 cm and a width of 4 cm. The shell is thin and strong, and it is rectangular and conical.

5. There are 6 ~ 7 spiral layers, and each spiral layer grows evenly and rapidly.

6. The spiral part is slightly closed, the spiral layer is round and the suture line is deep.

7. The shell surface is smooth and yellowish brown or dark brown with thin growth lines.

8. It lives in lakes, rivers, reservoirs, ponds and paddy fields, especially in the waters where aquatic plants are flourishing, and has strong adaptability.

9. China is distributed in northern provinces and regions, and abroad is in North Korea and North America.

10. Snail meat is delicious, unique in flavor and rich in nutrition. Every100g contains 2g of protein, 0.6g of fat, as well as phosphorus, calcium, iron and vitamin B.

1 1. It is rich in vitamin A and so on. , well received by the masses.

12. Snails are exported.

13. Export ports: Shandong, Jiangsu, Zhejiang, Jiangxi, Guangdong and Henan.