Arrowhead Crab
Huenia heraldica
- Usual depth1–240 m
- Water temperature21–30 °C
- Best monthsJune and July
- How commonRare
Photo credit: (c) Pauline Walsh Jacobson, some rights reserved (CC BY) · CC BY · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 6 records
- February: 4 records
- March: 4 records
- April: 6 records
- May: 7 records
- June: 8 records
- July: 12 records
- August: 6 records
- September: 5 records
- October: 5 records
- November: 5 records
- December: 5 records
Depth and water temperature
Depth
Mostly recorded at 1–240 m · Deepest record: 240 m
Water temperature
Recorded in surface water of 21–30 °C
Photos
(c) Kai Squires, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Pauline Walsh Jacobson, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Arrowhead Crab, Halimeda Crab
Names in 3 more languages
- French
- Crabe-halimède
- Japanese
- コノハガニ
- Simplified Chinese
- 紋章藻片蟹
Other scientific names: Huenia brevirostrata, Huenia proteus, Maja (Huenia) elongata, Maja (Huenia) heraldica, Maja (Huenia) proteus, Trigonothir pyramidatus
Similar species
Decorator crabHyastenus elatus
One-horned Spider CrabMenaethius monoceros
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).
- 184 open-data records from 1837 to 2015.
- Species data updated November 3, 2026.
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