Occidozyga martensii
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~80% in a week >90%
The round-tongued floating frog (Occidozyga martensii) is a species of frog in the family Dicroglossidae. Occidozyga magnapustulosus, distributed in scattered locations of northern Thailand and Laos, might be included within it.
Occidozyga martensii is found throughout most of Indochina. It is found in Cambodia, southern China (Yunnan, Guangxi, Guangdong, and Hainan), Laos, northern peninsular Malaysia, Thailand, Vietnam, and possibly Myanmar. Its natural habitats are subtropical or tropical moist lowland forest, rivers, intermittent rivers, swamps, freshwater marshes, intermittent freshwater marshes, ponds, irrigated land, and canals and ditches.
Amphibian and Reptiles of Peninsular Malaysia - Occidozyga martensii Wikipedia →
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Cambodia · 2026
© Ding Li Yong · XC1151732 · CC BY-NC-ND 4.0
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Thailand · 2014
© Marc Anderson · XC883134 · CC BY-NC-ND 4.0
Recording0:11
Thailand · 2026
© Siriwat Dangsri · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 2 | Khao Yai National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 2 | Bangkok | 🇹🇭 Thailand |
Likely
About 40% of wildlife watchers report a Round-tongued Floating Frog sighting in Cat Tien National Park on a given day, based on 65 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 4th most-seen of the 21 amphibians we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
June
In that month about 60% of wildlife watchers report a Round-tongued Floating Frog in Cat Tien National Park on a given day, against under 5% in March, the lowest month. That is one of Cat Tien National Park's wettest months, with about 340 mm of rain against 15 mm in February.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Round-tongued Floating Frog sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Round-tongued Floating Frog sightings, Cat Tien National Park has the highest daily chance: about 40%. Next come Khao Yai National Park (Thailand, about 10%).
Same family: Dicroglossidae
The closest relatives of the Round-tongued Floating Frog that you can see in Cat Tien National Park (family Dicroglossidae, Fork-tongued Frogs) are Alpine Cricket Frog (about 40%), Asian Peters Frog (about 30%) and Annam Wart Frog (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Round-tongued Floating Frog is recorded against all the amphibians logged in Cat Tien National Park (65 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.
