Occidozyga martensii
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~10% in a week ~30%
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
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Thailand · 2014
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Thailand · 2026
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| # | 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 |
Rare
Under 5% of wildlife watchers report a Round-tongued Floating Frog sighting in Bangkok on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 9th most-seen of the 10 amphibians we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June–July, September and November
In those months about 10% of wildlife watchers report a Round-tongued Floating Frog in Bangkok on a given day, against under 5% in August, October and December–May, the lowest months. Those are among Bangkok's wettest months, with about 160 mm of rain a month against 10 mm in December.
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.
2nd of 2
Of the 2 cities where we can rate Round-tongued Floating Frog sightings, Bangkok ranks 2nd at under 5%. The best odds are in Ho Chi Minh City (Vietnam, about 10%).
Same family: Dicroglossidae
The closest relatives of the Round-tongued Floating Frog that you can see in Bangkok (family Dicroglossidae, Fork-tongued Frogs) are Alpine Cricket Frog (about 10%) and Asian Peters Frog (about 10%), 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 Bangkok (15 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.
