Zhangixalus pachyproctus
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~20% in a week ~40%
Zhangixalus pachyproctus, the protruded vent tree frog, thick anus tree frog, or white-lipped tree frog, is a species of frog in the family Rhacophoridae. It is endemic to eastern China, Vietnam, and Thailand and predicted in Laos and Myanmar.
The adult male frog measures approximately 74.2–83.3 mm in snout-vent length and the adult female frog approximately 102.4 mm. The frog has white stripes down the sides of its jaw, body, and legs. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kaeng Krachan National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Protruded-vent Treefrog sighting in Kaeng Krachan National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 20th most-seen of the 21 amphibians we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February and April–May
In those months about 10% of wildlife watchers report a Protruded-vent Treefrog in Kaeng Krachan National Park on a given day, against under 5% in March and June–January, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Protruded-vent Treefrog sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Kaeng Krachan National Park, in our data
Kaeng Krachan National Park is the only park on Wallace's Line with enough records to rate Protruded-vent Treefrog sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Rhacophoridae
The closest relatives of the Protruded-vent Treefrog that you can see in Kaeng Krachan National Park (family Rhacophoridae, Old World Tree Frogs) are Spot-legged Tree Frog (about 20%), Red-webbed Treefrog (about 10%) and Nongkhor Asian Treefrog (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Protruded-vent Treefrog is recorded against all the amphibians logged in Kaeng Krachan National Park (5 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.
