Sri Lanka wood frog
Hydrophylax gracilis
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAmphibia (Amfibis)
- OrderAnura (Anurs)
- FamilyRanidae (Rànids)
- GenusHydrophylax
- SpeciesHydrophylax gracilis (Sri Lanka wood frog)
Hydrophylax gracilis, also known as Gravenhorst's frog, Gravenhorst's golden-backed frog, and Sri Lanka wood frog, is a species of frog in the family Ranidae. It is endemic to Sri Lanka. Hydrophylax gracilis occurs in marshes, agricultural land, grassland, and bush forests at elevations below 600 m (2,000 ft). Adult frogs are semi-arboreal and semi-aquatic, whereas the tadpoles live in stagnant waters. H. gracilis is a common species that can be threatened by loss of its wetland habitats through wetland reclamation, urbanization, and aquatic agrochemical pollution. However, it is present in many protected areas. Wikipedia →
10–20% of wildlife watchers report a Sri Lanka wood frog sighting in Sinharaja Forest Reserve, based on 11 days of visitor records from GBIF citizen-science data.
Closest Relatives at Sinharaja Forest Reserve
Günther's Golden-backed Frog
Indosylvirana temporalis
Sri Lankan Golden-backed frog
Indosylvirana serendipi
Common Indian Toad
Duttaphrynus melanostictus
Common Hourglass Tree Frog
Polypedates cruciger
Sharp-snouted Shrub Frog
Pseudophilautus cuspis
Sharp-snout Saddled Tree Frog
Taruga longinasus
Common Shrub Frog
Pseudophilautus popularis
Indian Five-Fingered Frog
Euphlyctis hexadactylus
Common skittering frog
Euphlyctis cyanophlyctis
Schneider's shrub frog
Pseudophilautus schneideri
Corrugated water frog
Lankanectes corrugatus
Sri Lanka rock frog
Nannophrys ceylonensis
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Wilpattu National Park | 🇱🇰 Sri Lanka | |
| 2 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 3 | Minneriya National Park | 🇱🇰 Sri Lanka | |
| 4 | Yala National Park | 🇱🇰 Sri Lanka |
Quick answers
What are the chances of seeing a Sri Lanka wood frog in Sinharaja Forest Reserve?
About 19% of wildlife watchers report a Sri Lanka wood frog sighting in Sinharaja Forest Reserve, based on 11 days of visitor records from GBIF citizen-science data.
When is the best time to see Sri Lanka wood frog in Sinharaja Forest Reserve?
August has the highest sighting rate for Sri Lanka wood frog in Sinharaja Forest Reserve in our monthly data.