Xenochrophis trianguligerus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~40% in a week ~70%
The triangle keelback (Xenochrophis trianguligerus) is a species of snake found in Brunei Darussalam, Burma (Myanmar), Cambodia, India (Nicobar Islands; Arunachal Pradesh (Deban - Changlang district)), Indonesia (Nias, Mentawai, Sumatra, Laos, Malaysia (Malaya and East Malaysia), Singapore, Thailand, and Vietnam.
The type locality is Java. Friedrich Boie 1827 Bemerkungen über Merrem's Versuch eines Systems der Amphibien, 1. Lieferung: Ophidier. Isis van Oken, Jena, 20: 508–566. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Khao Luang National Park | 🇹🇭 Thailand | |
| 3 | Bako National Park | 🇲🇾 Malaysia | |
| 4 | Khao Sok National Park | 🇹🇭 Thailand | |
| 5 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 6 | Kinabalu Park | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jakarta | 🇮🇩 Indonesia | |
| 2 | Bandung | 🇮🇩 Indonesia | |
| 3 | Kuala Lumpur | 🇲🇾 Malaysia |
Possible
About 20% of wildlife watchers report a Triangle Keelback sighting in Gunung Leuser National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 30th most-seen of the 47 reptiles we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 40% of wildlife watchers report a Triangle Keelback in Gunung Leuser National Park on a given day, against under 5% in February–March, June–July and September–November, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Triangle Keelback sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 6
Of the 6 parks where we can rate Triangle Keelback sightings, Gunung Leuser National Park ranks 5th at about 20%. The best odds are in Danum Valley Conservation Area (Malaysia, about 30%), Khao Luang National Park (Thailand, about 30%) and Bako National Park (Malaysia, about 30%).
Same family: Colubridae
The closest relatives of the Triangle Keelback that you can see in Gunung Leuser National Park (family Colubridae, Colubrid Snakes) are Common Bronze-back (about 40%), Western Mangrove Cat Snake (about 20%) and Gray Bronzeback (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Triangle Keelback is recorded against all the reptiles logged in Gunung Leuser National Park (7 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
