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Freshwater animals

Flat Bitterling

Amazing fact

The flat bitterling grows larger than any other bitterling species in Japan.

鳥羽水族館
Flat Bitterling in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

The flat bitterling grows larger than any other bitterling species in Japan.

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THE REAL WORLD

The real Flat Bitterling

Scientific name
Acheilognathus rhombeus
Japanese name
カネヒラ
Group
Freshwater animals
Order
Cypriniformes
Family
Cyprinidae
Genus
Acheilognathus
Facts about the real animal.
01

A bitterling that lives in Honshu west of the Nobi Plain, northern Kyushu, and the Korean Peninsula.

02

It lives in slow-flowing rivers, ponds and marshes, and especially likes places with lots of water plants.

Basic data

Size
Total length: up to 15 cm
Range
Honshu west of the Nobi Plain and northern Kyushu in Japan, and the Korean Peninsula
鳥羽水族館

Where the Flat Bitterling has been recorded

World map with dots where the Flat Bitterling has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

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
カネヒラ
简体中文
斜方鱊
繁體中文
斜方鱊
한국어
납지리

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

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.

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