Fauna
Amphibian

Japanese Tree Frog

Dryophytes japonicus

Also known as Japanese Treefrog, Far Eastern Tree Frog

Adorned in vibrant green skin that can shift to brown or gray to match nearby vegetation, Japanese tree frogs are famed for their remarkable cold tolerance, surviving extreme sub-zero winter temperatures in a state of supercooled dormancy. During spring breeding choruses, males inflate prominent vocal sacs to serenade females around flooded rice paddies and wetlands. Beyond their ecological versatility on Earth, these adaptable amphibians even gained international fame as microgravity research subjects aboard space stations.

AmphibianCold HardyNocturnal
Japanese Tree Frog reference1 / 7
(c) Kim, Hyun-tae, some rights reserved (CC BY), uploaded by Kim, Hyun-tae · cc-by
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyFlies, Mosquitoes, Spiders
Predators
  • Snakes
  • Herons
  • Bullfrogs
ThreatsPesticide pollution, wetland drainage, and urban development
HabitatsRice paddies, wetlands, grasslands, and moist forests
Life span4–6 years
Classification
  1. OrderAnura
  2. FamilyHylidae
  3. GenusDryophytes
  4. SpeciesDryophytes japonicus
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Listen in Spring: Males form loud choruses around flooded rice fields from spring through early summer.
  • Search Foliage: Look for adults resting quietly on broad leaves or reeds near water during the day.
  • Handle Gently: Wet your hands with unchlorinated pond water before touching to protect their sensitive skin.
Related species
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Species set

Moonlight Marvels

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