Hylarana taipehensis
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~30% in a week ~60%
Hylarana taipehensis is a species of "true frog", family Ranidae. It has several common names, including Taipei frog, Taipei grass frog, two-striped grass frog, or striped slender frog. Following its redelimitation in 2019, its range is now believed to extend from Taiwan and southern China (including Hainan) to Vietnam, Laos, Cambodia, and eastern Thailand. It has been observed as high as 800 meters above sea level.
Males are usually less than 3 cm (1.2 in) in snout-vent length and females less than 4 cm (1.6 in). The dorsum is yellowish green to greenish brown and the sides are light yellowish brown. Paired dorso-lateral glandular folds are visible as brownish black lines. The limbs are light brown and have dark brown stripes. The abdomen and neck have tiny spots and have three brownish black stripes each. The tympanum and the region behind and below it are dark blackish brown in color.
Hylarana taipehensis occurs in open, grassy wetlands, rice paddies, river floodplains, and forest ponds and swampy areas in deciduous forests. It is often common. Breeding takes place at water edges sheltered by thickets.
Hylarana taipehensis adapts... Wikipedia →
Recording0:08
Taiwan · 2025
© abujudy · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cat Tien National Park | 🇻🇳 Vietnam |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Taipei Zoo | 🇹🇼 Taiwan |
With luck
About 10% of wildlife watchers report a Taipei frog sighting in Cat Tien 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 30%, and over a week to about 60%, if each day is a fresh chance.
June
In that month about 30% of wildlife watchers report a Taipei frog in Cat Tien National Park on a given day, against under 5% in July to May, the lowest months. That is one of Cat Tien National Park's wettest months, with about 340 mm of rain against 15 mm in February.
Only Cat Tien National Park, in our data
Cat Tien National Park is the only park on Wallace's Line with enough records to rate Taipei frog sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Taipei frog is recorded against all the amphibians logged in Cat Tien 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.
