Occidozyga martensii
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~30% in a week ~60%
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
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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 |
With luck
About 10% of wildlife watchers report a Round-tongued Floating Frog sighting in Ho Chi Minh City on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 8th most-seen of the 9 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.
February–March, May, July and December
In those months about 20% of wildlife watchers report a Round-tongued Floating Frog in Ho Chi Minh City on a given day, against under 5% in April, June and August–November, the lowest months.
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 cities where we can rate Round-tongued Floating Frog sightings, Ho Chi Minh City has the highest daily chance: about 10%. Next come Bangkok (Thailand, under 5%).
Same family: Dicroglossidae
The closest relatives of the Round-tongued Floating Frog that you can see in Ho Chi Minh City (family Dicroglossidae, Fork-tongued Frogs) are Alpine Cricket Frog (about 30%) and Asian Peters 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 Ho Chi Minh City (17 verified sightings), 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.
