Asian Grass Frog

02 Jan

Fejervarya limnocharis

Asian Grass Frog Fejervarya limnocharis

Asian Grass Frog found near pond in Laos

Cricket Frog Fejervarya limnocharis

Another Asian Grass Frog found in Laos

Asian Grass Frog Rana limnocharis

Asian Grass Frog found at night on Ko Samet

Paddy Frog Fejervarya limnocharis

Asian Grass Frog found in forest in Khao Yai

Ricefield Frog Fejervarya limnocharis

Sub-adult Asian Grass Frog found at edge of rain puddles in Suan Luang

Asian Grass Frog Fejervarya limnocharis juvenile

Juvenile Asian Grass Frog found on trail in Khao Yai

Cricket Frog Fejervarya limnocharis juvenile

Metamorph Cricket Frog found at edge of rain puddles in Suan Luang

Paddy Frog Fejervarya limnocharis eating

Asian Grass Frog eating earthworm in Chatuchak

Cricket Frog Fejervarya limnocharis calling

Asian Grass Frog calling from marsh in Bang Kapi

Asian Grass Frog Fejervarya limnocharis mating

Asian Grass Frogs mating in rain puddle in Bang Kapi

English name: Asian Grass Frog (aka “Cricket Frog”, “Ricefield Frog”, “Paddy Frog”)
Scientific name: Fejervarya limnocharis, (formerly known as Rana limnocharis)
Thai name: Kob nong, Kiat e-mo, Kiat bak-m

Description: Up to 6cm long. A medium-sized frog with a long narrow snout and raised bump on its back. Broken-up skin ridges are seen in lines across the entire top of the body. Body is brown or gray with a yellow, tan, or green stripe down the middle that may be wide, narrow, or completely absent. Often has dark brown or black markings as well, especially on the lips. Underside is white.

Tadpoles can be up to 4cm long. They are oval-shaped with a tail twice as long as the body. Body is brown or gray on top and silver on the bottom.

Call: A loud grating chirp that is reminiscent of a cricket.

Similar Species: Green Paddy Frog has smooth skin and light stripes on the sides.
Three-striped Grass Frog has smooth skin, is more slender, and has three stripes.
Chinese Edible Frog, which does have long raised bumps as well, is larger, much heavier, and never has a dorsal stripe.
Round-tongued Floating Frog is “rounder” with shorter legs and lacks the skin ridges.

Habitat: Can be found in almost any wet habitat, including rivers, lakes, ponds, canals, marshes, rice fields, ditches, and puddles in empty lots. Is more common in open areas and human-disturbed habitats than in undisturbed forest.

Contribution to the ecosystem: Helps control insect and millipede populations. Provides food for birds, snakes, lizards, larger frogs, and fish.

Danger to humans: No danger to humans.

Conservation status and threats: They have a wide distribution, can live in almost any habitat, and are very common, so there are no current threats to their conservation status.

Interesting facts: As with many widespread Asian herps, the Asian Grass Frog is actually several different species that look similar to each other, but are genetically different and do not interbreed. It will take much more study (and especially genetic testing) to continue deliniating which species is which and how far each one ranges, but in the last 15 years many new species of Grass Frog have already been named across Asia, all formerly assumed to be under the single “Asian Grass Frog” species.

Ecology Asia: Field Frog
Frogs of Borneo: Fejervarya limnocharis
AmphibiaWeb: Fejervarya limnocharis
Wikipedia: Fejervarya limnocharis
The IUCN Red List: Fejervarya limnocharis
Thailand Office of Environmental Planning and Policy: A Checklist of Amphibians and Reptiles in Thailand
Hong Kong Amphibians and Reptiles (2nd Edition)
A Field Guide to the Amphibians of Cambodia
Simon and Schuster’s Guide to Reptiles and Amphibians of the World


Posted by on January 2, 2012 in Frogs, True Frogs


Tags: , , ,

14 responses to “Asian Grass Frog

  1. Morley Langdon

    January 27, 2014 at 4:20 pm

    What do these frogs eat as small frogs. My elementary students what me to keep a bunch in a terrarium, What all do I need. email:

    • Asian Herp Blogs

      January 28, 2014 at 7:40 pm

      I would start out with a small number of frogs first, just 2 or 3, to see if you can care for them before you get too many. They typically eat any kind of insects and worms – if you can get small earthworms or crickets from a pet store, that might be your best bet. You can also try cockroaches, flies, or any other insects that you can find.

  2. Willy

    May 23, 2014 at 9:56 am

    just found one of this beauties in our garden and it seems that (s)he is watching her eggs laid down in a flower pot. Have a nice photo. Do you want to have it for your collection?


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