About Hydrophylax gracilis (Gravenhorst, 1829)
Hydrophylax gracilis (first described by Gravenhorst in 1829) has several common names: Gravenhorst's frog, Gravenhorst's golden-backed frog, and Sri Lanka wood frog. It is a species of frog belonging to the family Ranidae, and it is endemic to Sri Lanka. This species can be found in marshes, agricultural land, grassland, and bush forests at elevations below 600 m (2,000 ft). Adult Hydrophylax gracilis are both semi-arboreal and semi-aquatic, while the species' tadpoles live in stagnant water. H. gracilis is a common species, but it faces threats from wetland habitat loss caused by wetland reclamation, urbanization, and aquatic agrochemical pollution. Despite these threats, the species occurs in many protected areas.