Asian grass frog – Amphibians of the Ryukyu Islands

The Asian grass frog  ( Fejervarya kawamurai) is found on Mainland Japan and most of the Ryukyu Islands. The warty frog is fairly common on Okinawa. It’s biggest threats are pesticide exposure and habitat loss.

  • Scientific name: Fejervarya kawamurai
  • Common name: Asian grass frog, marsh frog and common pond frog
  • Distribution: Ryukyu Islands and Mainland Japan
  • Habitat: Rice fields, ditches, marshes, parks and farm fields.
  • Diet: Insects
  • Average size: 45mm-75mm
  • Color: light brown with a white belly
Asian grass frog - 60mm macro

Asian grass frog – Canon 70d * 60mm macro

Wide angle macro - Canon 70d *Tokina fisheye

Wide angle macro – Canon 70d *Tokina fisheye

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Asian grass frog- Macro

Asian marsh frog - drainage ditch

Asian marsh frog – drainage ditch

Asian marsh frog

Asian marsh frog

Asian grass frog feeding

Asian grass frog feeding

Asian marsh frog - Okuma resort

Asian marsh frog – Okuma resort

Asian grass frog -MYN

Asian grass frog -MYN

Egret feeding -the last goodbye

Egret feeding -the last goodbye

Have a great day!

Okinawa green tree frog – Ryukyu Islands

The Okinawa green tree frog ( Rhacophorus viridis viridis ) is found on Okinawa, Iheya and Kume Island.

  • Scientific name: Rhacophorus viridis viridis
  • Common name: Okinawa Green tree frog
  • Distribution: Okinawa, Kume, and Iheya.
  • Habitat: Forests, mountain slopes and farm fields near water.
  • Diet: Insects
  • Average size: 45mm-75mm
  • Color: Olive green, Bright green and dark brown
Okinawa Green tree frog

Okinawa Green tree frog © Shawn Miller

This beautiful frog is a master of camouflage.  I often find it resting on tree branches, blending in with the surrounding green leaves.

Natural habitat

Natural habitat © Shawn Miller

Green tree frog

Green tree frog © Shawn Miller

Amami green tree frog ( Rhacophorus viridis amamiensis)

Amami green tree frog ( Rhacophorus viridis amamiensis) © Shawn Miller

The breeding season stretches from February to April on Okinawa.

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Green tree frog mating © Shawn Miller

On Kume Island the tree frogs transform to a golden brown when mating.

Kume Island tree frog

Kume Island tree frog © Shawn Miller

They construct a foam nest on a tree branch above a still water source. Eventually, the foam liquefies when the eggs are ready to hatch.

Frog foam nest

Frog foam nest © Shawn Miller

Not all frogs survive to make the nest. The Akamata is the most common snake on the Okinawan Islands.  It feeds on venomous habu snakes, baby sea turtles, lizards, and frogs.

Akamata feeding

Akamata snake feeding © Shawn Miller

Photographed on white for the Meet your Neighbours global biodiversity project.

MYN Technique

MYN Technique © Shawn Miller

MYN Technique

MYN Technique © Shawn Miller

Green tree frog

Green tree frog © Shawn Miller

I often find this frog searching for insects on the road.

Roadside green tree frog

Roadside green tree frog © Shawn Miller

” Know your nature with Shawn Miller ” Let’s protect the wildlife of Okinawa.