Lyreidus tridentatus
Amazing fact
The shell of Lyreidus tridentatus is red to reddish brown, with fine spots and netlike patterns.
臺灣生命大百科（國立臺灣海洋大學海洋生物研究所甲殼類實驗室提供）
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An illustration based on the real animal.
A little discovery to share.
It is named after the biwa, an old Japanese stringed instrument, because its long, narrow shell looks like one.
THE REAL WORLD
The real Lyreidus tridentatus
- Scientific name
- Lyreidus tridentatus
- Japanese name
- ビワガニ
- Group
- Ocean animals
- Class
- Malacostraca
- Order
- Decapoda
- Family
- Lyreididae
- Genus
- Lyreidus
It is named after the biwa, an old Japanese stringed instrument, because its long, narrow shell looks like one.
Basic data
- Range
- From Boso Peninsula to Australia and New Zealand
Where the Lyreidus tridentatus 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 — ビワガニChecked: 2026-11-04
- 臺灣生命大百科（國立臺灣海洋大學海洋生物研究所甲殼類實驗室提供） — Lyreidus tridentatus De Haan, 1841Checked: 2026-11-09
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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