Gnathopogon elongatus
Amazing fact
The tamoroko gudgeon varies greatly in body shape depending on where it lives.
公益財団法人 四万十川財団
No sign-up needed. You can save notes on this device.
An illustration based on the real animal.
A little discovery to share.
The tamoroko gudgeon varies greatly in body shape depending on where it lives.
THE REAL WORLD
The real Gnathopogon elongatus
- Scientific name
- Gnathopogon elongatus
- Japanese name
- タモロコ
- Group
- Freshwater animals
- Order
- Cypriniformes
- Family
- Cyprinidae
- Genus
- Gnathopogon
It is also listed under the scientific name Gnathopogon elongatus elongatus.
A fish that lives in the Kanto, Tokai, Kinki and San'yo regions of Japan and in Shikoku.
It mostly lives in the middle and lower layers of ponds and marshes, in the middle and lower reaches of rivers, and in irrigation channels.
How the Gnathopogon elongatus lives
It often swims among schools of dark chub and Japanese dace. It eats midge larvae, tubifex worms and aquatic plants. From early summer into the rainy season, it enters small channels in rice-growing areas to lay eggs. It lays eggs on aquatic plants and on roots of plants whose stems rise above the water.
公益財団法人 四万十川財団国立環境研究所Basic data
- Range
- Kanto, Tokai, Kinki, Sanyo, and Shikoku
Where the Gnathopogon elongatus 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
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 鳥羽水族館 — タモロコChecked: 2026-11-04
- 国立環境研究所 — タモロコChecked: 2026-11-07
- 公益財団法人 四万十川財団 — 四万十川の魚 １４１ タモロコChecked: 2026-11-07
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 mistakeRELATIVES
Others in Cyprinidae
MORE TO MEET
