
Photo: (c) Lawrence Hylton, some rights reserved (CC BY) · CC-BY (May be cropped or resized)
Rhabdophis helleri
Range
Bangladesh, Bhutan, China, India (Arunachal Pradesh, Assam, Mizoram, Sikkim, Tripura), Myanmar, Nepal and northern Vietnam
Size
Up to 1.3m
Heller's red-necked keelback is a keelback snake of the subfamily Natricinae, native to South Asia and neighbouring regions. It is a medium-sized snake that may reach a total length of 1.3 m, with 163–172 belly scales, and it lays eggs. The type locality is Tengyueh in Yunnan, China (Wikipedia, general species account).
It is found in Bangladesh, Bhutan, China, India (Arunachal Pradesh, Assam, Mizoram, Sikkim, Tripura), Myanmar, Nepal and northern Vietnam. Its venom is said to cause severe coagulopathy, but no human fatalities have been reported.