Oncomelania generally refers to molluscs of Oncomelania, belonging to Gastropoda Oncomelania. River snails are distributed in most areas of China. Snails require higher water quality and produce less. You can catch it in summer and autumn. China snails are very common in fresh water. Snails are dioecious. The method of sex identification of snails is mainly based on the shape of their right antenna. The right antenna of the male snail bends inward to the right (the bent part is the male genitalia). In addition, the female snail is big and round, and the male snail is small and long. Oncomelania hupehensis is an oviparous animal, and its reproduction mode is unique. The embryonic development and larval development of Oncomelania hupensis are completed in the mother body. It takes about a year for a fertilized egg to give birth to a small snail. Oncomelania hupensis lays eggs in batches and begins to breed in March-April every year. At the same time of producing young snails, the male and female parents mate and fertilize, and at the same time, the young snails to be produced in the next year are propagated in the mother. A mother snail can produce about 100 ~ 150 young snails every year.

Conch is a soft-bodied gastropod. Shellfish are mainly divided into five classes. There are more than 70,000 species in the world, and the marine species can be called conch.

Conch shell is slightly square in outline, large and thick, with a shell as high as 10 cm and six spiral layers. Rich in protein eggs, vitamins, essential amino acids and trace elements, it is a typical natural animal health food with high protein, low fat and high calcium.

Difference:

River snail: common in fresh water, small in size. Indications: clearing away heat and promoting diuresis, removing dampness and detoxifying. Can be used for treating constipation, jaundice, beriberi, edema, thirst, hemorrhoid, hematochezia, red eye, swelling and pain, and furuncle.

Conch: Marine life, big and thick. Edible value: Snail meat is rich in vitamin A, protein, iron, calcium and other nutrients, and has dietotherapy effect on diseases such as conjunctival congestion, jaundice, beriberi and hemorrhoids.