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  • Depicted here a forest green tree frog tadpole (Zhangixalus arboreus) just about to drop from a sponge-like egg mass suspended in forest canopy. Seasonal rains saturate the egg mass, eventually rupturing its membrane. Developing tadpoles wriggle to the bottom and drop into bodies of water such as lakes and ponds, but also swimming pools, wells and other manmade structures. This unusual reproductive behavior is characteristic of this species, which is endemic to Japan. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • Depicted here a forest green tree frog tadpole (Zhangixalus arboreus) just about to drop from a sponge-like egg mass suspended in forest canopy. Seasonal rains saturate the egg mass, eventually rupturing its membrane. Developing tadpoles wriggle to the bottom and drop into bodies of water such as lakes and ponds, but also swimming pools, wells and other manmade structures. This unusual reproductive behavior is characteristic of this species, which is endemic to Japan. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a pair of forest green tree frogs (Zhangixalus arboreus) preparing to spawn. The male has jumped onto the back of the female. From this point, she will carry him to her chosen location, then excrete a substance that the male churns into a bubbly sponge-like mass, into which the female deposits eggs as the male fertilizes. The female bears the weight of the male for the duration, hanging by her forelimbs from a branch or something similar. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • Depicted here is the split-second just before a forest green tree frog tadpole (Zhangixalus arboreus) drops from a sponge-like egg mass suspended in forest canopy. Seasonal rains provide the water and signal to the developing tadpoles. They drop from the egg masses into bodies of water such as lakes and ponds, but also swimming pools, wells and other manmade structures. This unusual reproductive behavior is characteristic of this species, which is endemic to Japan. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a pair of forest green tree frogs (Zhangixalus arboreus). The male is facing the camera, female in the rear. This species normally spawns on branches of trees, but sometimes also makes use of manmade structures. Habitat destruction is increasingly restricting their range, as well as limiting suitable spawning locations. This pair chose to spawn on a fence, four to five hours after this photograph was taken. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a male forest green tree frog (Zhangixalus arboreus) hanging from a thin branch during light rainfall. This frog jumped back into the canopy after approaching a female that was not yet ready to spawn. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a male forest green tree frog (Zhangixalus arboreus) sitting on the crossbar of a fence. This male spawned four to five hours after this photograph was taken. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a pair of forest green tree frogs (Zhangixalus arboreus) preparing to spawn. The male has jumped onto the back of the female. From this point, she will carry him to her chosen location, then excrete a substance that the male churns into a bubbly sponge-like mass, into which the female deposits eggs as the male fertilizes. The female bears the weight of the male for the duration, hanging by her forelimbs from a branch or something similar. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a pair of forest green tree frogs (Zhangixalus arboreus) spawning. Endemic to Japan, this species produces a sponge-like egg mass, normally suspended from tree branches above bodies of still water. Though not yet considered endangered, populations of this frog are in decline, in large part due to habitat destruction. As seen here, the frogs are doing the best they can, in this case using a manmade fence in lieu of a tree. Conservation efforts are perhaps the best hope of sustaining this species. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • Depicted here a forest green tree frog tadpole (Zhangixalus arboreus) dropping from a sponge-like egg mass suspended in forest canopy. Seasonal rains saturate the egg mass, eventually rupturing its membrane. Developing tadpoles wriggle to the bottom and drop into bodies of water such as lakes and ponds, but also swimming pools, wells and other manmade structures. This unusual reproductive behavior is characteristic of this species, which is endemic to Japan. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
  • This is a pair of forest green tree frogs (Zhangixalus arboreus) spawning. Endemic to Japan, this species produces a sponge-like egg mass, normally suspended from tree branches above bodies of still water. Though not yet considered endangered, populations of this frog are in decline, in large part due to habitat destruction. As seen here, the frogs are doing the best they can, in this case using a manmade fence in lieu of a tree. Conservation efforts are perhaps the best hope of sustaining this species. Photographed in Yamanashi Prefecture, Japan.
    zhangixalus-arboreus-forest-green-tr...tif
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