Siebold's Water Snake

Siebold's water snake, also called Siebold's mud snake, is a mildly venomous, rear-fanged snake of the family Homalopsidae, endemic to Asia. Its preferred habitat is freshwater wetlands. It has a back pattern of large blotches like those of a python, but is distinctive in having its nostrils on top of the snout, which helps its aquatic life, and it lacks lip pits (Wikipedia, general species account).

It may reach a total length of 89 cm, with a tail of 11 cm in a female of that length, and it gives birth to live young. The Reptile Database lists Nagaland, Mizoram, Tripura, Arunachal Pradesh and Assam.