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 →
Closest Relatives at Minneriya National Park
Common Indian Toad
Duttaphrynus melanostictus
Chunam Tree Frog
Polypedates maculatus
Rohan's Globular Frog
Uperodon rohani
Common Indian Cricket Frog
Minervarya agricola
Sri Lankan Bullfrog
Uperodon taprobanicus
Common Hourglass Tree Frog
Polypedates cruciger
Jerdon's Bullfrog
Hoplobatrachus crassus
Common skittering frog
Euphlyctis cyanophlyctis
Mihintale Red Narrow-mouthed Frog
Microhyla mihintalei
Indian Burrowing Frog
Sphaerotheca breviceps
Indian Five-Fingered Frog
Euphlyctis hexadactylus
Ferguson's Tree Frog
Pseudophilautus fergusonianus
📅 Monthly Probability
Fewer than 5 records of Sri Lanka wood frog at Minneriya National Park — not enough to chart months honestly.
☀️ 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 |