Snail is a kind of freshwater snail, which usually grows in still water environment such as streams, rivers and lakes in mountainous areas. They usually inhabit sediments at the bottom of the water and feed on algae and organic waste. Snail has high requirements on water quality, and has certain adaptability to factors such as water temperature, water flow speed and water quality environment. Generally speaking, they like the environment with moderate water temperature, slow or static water flow, and the water with clear water quality, rich in oxygen and organic matter is more beneficial to their growth. However, it should be noted that the specific growth environment will also be affected by local topography, climate and other organisms, so not all pit snails appear in the same environment.