Chinese water snake

The Chinese water snake, Chinese smooth water snake, Chinese mud snake or Chinese rice paddy snake ("Enhydris chinensis" or "Myrrophis chinensis") is a species of mildly venomous, rear-fanged snake, endemic to Asia.
Geographic range.
"Enhydris chinensis" is found in China, Taiwan, and Vietnam.
Habitat.
As the common name suggests, the Chinese water snake is a highly aquatic species, adapting well to human-altered environments such as fish pools and rice paddies.
Conservation status.
"Enhydris chinensis" is considered common, although it has declined in Taiwan and is protected there.
Description.
"Enhydris chinensis" is a relatively small snake reaching total length (including tail) of up to .
Diet.
The Chinese water snake typically feeds on fish and amphibians.
Commercial use.
"Enhydris chinensis" are harvested for food and skins, but this is not considered to be threatening its populations.
Medicinal use.
"Enhydris chinensis" is used in folk medicine. It is commonly used in the production of Chinese snake oil. It is known for treating ailments such as fever, joint pain, and headache.