Triangular Fiddler Crab
Austruca triangularis
- Water temperature26–30 °C
- Best monthsApril, October, and November
- How commonRare
Photo credit: no rights reserved · CC0 1.0 · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 11 records
- February: 13 records
- March: 10 records
- April: 22 records
- May: 7 records
- June: 4 records
- July: 4 records
- August: 13 records
- September: 12 records
- October: 16 records
- November: 17 records
- December: 9 records
Depth and water temperature
Water temperature
Recorded in surface water of 26–30 °C
Photos
no rights reserved · CC0 1.0 · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) coenobita, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) coenobita, some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) Alan Bell, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Кирилл, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Triangular Fiddler Crab
Names in 2 more languages
- Japanese
- シモフリシオマネキ
- Simplified Chinese
- 三角南方招潮
Other scientific names: Gelasimus triangularis, Uca (Austruca) triangularis, Uca (Celuca) triangularis, Uca (Paraleptuca) triangularis, Uca triangularis
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Conservation status as published by GBIF (IUCN Red List).
- 41 open-data records from 1873 to 2007.
- Species data updated October 26, 2026.
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