Hebius johannis
Habitat
Forest and montane grassland near rivers and streams, 1,200–2,750 m
Range
South-western China: Guizhou, Sichuan and Yunnan (endemic)
Johann's keelback (Hebius johannis) is a natricine snake endemic to south-western China, found in the inland provinces of Guizhou, Sichuan and Yunnan. It lives near rivers and streams in forest and montane grassland at 1,200–2,750 m. (The Reptile Database; Wikipedia, general species account)