English name: Three-striped Grass Frog (aka “Long-toed Frog”)
Scientific name: Hylarana macrodactyla (formerly known as Rana macrodactyla)
Thai name: Kob Lang keet
Description: To 5cm long. A small, slender frog with smooth skin and three gold stripes on the back. Body is green or brown. Dark spots can be found between the stripes. Head is long and narrow. Legs are long and especially slender. Underside is white.
Tadpoles are small and brown.
Call: A light chirp.
Similar Species: Green Paddy Frog is very similar in appearance, but is larger, slightly bulkier, and lacks the strips in the middle of the back.
Asian Grass Frog has ridges on the skin and lacks stripes on the sides.
Habitat: Found in lowland lakes, marshes, floodplains, rice paddies, and open grassy areas in forest. Appears to favor flooded fields and marshes with vegetation, rather than open water.
Contribution to the ecosystem: Helps control the populations of insects and spiders. Provides food for birds, snakes, large lizards, and fish.
Danger to humans: No danger to humans.
Conservation status and threats: The IUCN Red List lists the Three-striped Grass Frog as “Least Concern” due to its ability to tolerate a range of habitats and it large populations. However, it appears to have a scattered distribution.
Interesting facts: The scattered distribution of the Three-striped Grass Frog may be due to more specific habitat requirements than is currently known. Further study is important so that vital habitat can be preserved from draining and development. I have yet to find this species in the vicinity of Bangkok, which may only be the result of having not yet checked the correct habitat.
The IUCN Red List: Hylarana macrodactyla
Wikipedia: Hylarana macrodactyla
Thailand Office of Environmental Planning and Policy: A Checklist of Amphibians and Reptiles in Thailand
A Field Guide to the Amphibians of Cambodia
Hong Kong Amphibians and Reptiles (2nd Edition)