Fish Quiz Japan - 800+ Species

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About this app

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 of them shown as an actual photograph. Photographer and
licence have been checked for all of them.

■ The names people actually use
This is what makes the app different.
The same fish changes its name as you travel. Japanese amberjack is called
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
along with the names used there — 46 of Japan's 47 prefectures are covered.
Local names are shown in Japanese with romanised readings, so you can learn them
even if you do not read Japanese.

■ Three levels of fish knowledge
- Well Known (91 species with photos) — the fish you see at the market and on the menu
- Enthusiast (430 species with photos) — for anglers and field-guide readers
- Professor (343 species with photos) — scientific names and fine identification points
Each level draws only from its own pool, so beginners and specialists both get a
real game rather than a diluted one.

■ Daily Quiz and nationwide rankings
Twenty questions a day, the same twenty for everybody. Fifteen seconds per question,
and the faster you answer the more you score. Today, this month, this year and all time.

■ Review what you got wrong
Every miss is remembered, and you can run a quiz made only of those fish.
Get one right and it graduates off the list.

■ Also
- Pinch or tap to zoom any photo — useful for fins, barbels and markings
- Nine languages, switchable at any time
- Share your results and collection progress
- The field guide and the 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.

For anglers, aquarium visitors, seafood lovers, and anyone curious about what is
swimming around Japan.

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Photographs come from Wikimedia Commons and iNaturalist, and only material licensed
for commercial use and modification is used (CC0 / public domain / CC BY / CC BY-SA).
The map of Japan derives from MapSVG (CC BY 4.0).
The full list of photographers and licences is in the app under
Settings > Photo & map credits.

What’s new

Now you can see how to tell look-alikes apart.

- Get one wrong and the card shows what separates your pick from the answer
- Written from sources for 138 groups of similar-looking fish
- See how many you have collected and how many are left, plus a rank at each level
- The daily quiz breaks down your score and resumes after an interruption
- Hints no longer count toward your streak
- Local-name quizzes now also ask which name belongs where
- Small-screen layout and tap feedback fixed