Fish Quiz Japan
800+ fish with photos & names
Free · Designed for iPad. Not verified for macOS.
Look at a photograph and name the fish. Four choices, one answer.
Every fish you get right joins your own field guide.
800+ SPECIES, ALL REAL PHOTOGRAPHS
From tuna, sea bream and yellowtail you would meet on a dinner table, to deep-sea oddities and reef fish of the Ryukyu Islands — over 800 species of the fish found in and around Japan, every one shown as an actual photograph with the photographer and licence checked.
THE NAMES PEOPLE ACTUALLY USE
The same fish changes its name as you travel. Japanese amberjack is wakashi → inada → warasa → buri in Kanagawa, but tsubasu → fukuragi → gando → buri in Toyama. Pick a prefecture on the map of Japan and you get the fish of those waters together with the names used there — 46 of Japan's 47 prefectures are covered, shown in Japanese with romanised readings.
THREE LEVELS
Well Known (94 species), Enthusiast (403) and Professor (367). Each level draws only from its own pool, so beginners and specialists both get a real game.
DAILY QUIZ AND RANKINGS
Ten questions a day, the same ten for everybody. Fifteen seconds each, faster answers score higher. Today, this month, this year and all time.
REVIEW
Every fish you miss is remembered, and you can run a quiz made only of those. Get it right and it graduates off the list.
ALSO
Pinch or tap to zoom any photo. English and Japanese, switchable at any time. Share your results and collection progress. The field guide and map work offline.
Species notes are written with the look-alike species checked side by side, because the hardest part of naming a fish is telling it from its close relatives.
Photographs come from Wikimedia Commons and iNaturalist under licences permitting commercial use and modification (CC0 / public domain / CC BY / CC BY-SA). The map of Japan derives from MapSVG (CC BY 4.0). Photographers and licences are listed in the app under Settings > Photo & map credits.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The app now speaks 9 languages.
- Added Simplified Chinese, Traditional Chinese, Korean, Spanish, French, German and Brazilian Portuguese (9 in total with Japanese and English).
- The app follows your device language, and you can change it any time in Settings.
- Fish names, family names and prefecture names are shown in each language.
Note: in the seven new languages, the interface and the "Well Known" fish descriptions are translated. Descriptions in "Enthusiast" and "Professor" remain in English.
The developer, Kyosuke Takahashi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kyosuke Takahashi
- Size
- 60 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
Contains
Advertising
- Copyright
- © 2026 Kyosuke Takahashi