Japanese brown frog
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An illustration based on the real animal.
A little discovery to share.
Japanese brown frogs eat small animals such as arthropods.
THE REAL WORLD
The real Japanese brown frog
- Scientific name
- Rana japonica
- Japanese name
- ニホンアカガエル
- Group
- Amphibians and reptiles
- Class
- Amphibia
- Order
- Anura
- Family
- Ranidae
- Genus
- Rana
A frog found in Japan and nowhere else, living in rice paddies, forests, grasslands and wetlands.
In some areas it lays its eggs in water while it is still cold in winter. After that, it rests until spring.
Males call a lot in the breeding season, but unlike many other frogs, their throats do not puff out when they call.
Basic data
- Size
- Body length: 35–75 mm
- Diet
- Arthropods and other small animals
- Range
- Honshu, Shikoku, and Kyushu in Japan
Where the Japanese brown frog has been recorded
Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF
Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.
Names around the world
- 日本語
- ニホンアカガエル
- 简体中文
- 日本林蛙
- 繁體中文
- 日本林蛙
- 한국어
- 일본산개구리
- العربية
- ضفدع ياباني
- Bahasa Indonesia
- Katak cokelat jepang
- Русский
- Японская лягушка
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 井の頭自然文化園 — ニホンアカガエルChecked: 2026-11-03
We check each fact against its source. The illustrations simplify how the real animal looks.
The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.
The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.
This page was translated from the original Japanese with the help of AI.
Report a mistakeEXHIBIT INFORMATION
Places that keep or show the Japanese brown frog
Zoos, aquariums and other places whose official websites say they keep or show this animal.
Kanto
Displays can change with the animals’ health and the seasons. Check each facility’s official website before you go.
RELATIVES
Others in Ranidae
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