Xenochrophis trianguligerus
—
Triangle Keelback
Also known as:
Red-sided Keelback Water Snake

A small pond near the Borneo Rainforest Lodge was a fairly reliable source of this frog-eating aquatic snake. The others I saw were all prowling in the water, but this young one was poised on some vegetation overhanging the pond
.
Online references:
- Xenochrophis trianguligerus account on The Reptile Database
- Xenochrophis trianguligerus account on Ecology Asia
Printed references:
- Das, I. 2010. A Field Guide to the Reptiles of South-east Asia
- Malkmus, R., Manthey, U. Vogel, G., Hoffmann, P., & Kosuch, J. 2002. Amphibians & Reptiles of Mount Kinabalu (North Borneo)
- Stuebing, R. B., Inger, R. F., Lardner, B. 2014. A Field Guide to the Snakes of Borneo, Second Edition