Montagu's crab
Lophozozymus incisus
- Usual depth0–65 m
- Water temperature10–29 °C
- Best monthsJanuary, March, and September
- How commonRare
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 32 records
- February: 10 records
- March: 27 records
- April: 25 records
- May: 4 records
- June: 17 records
- July: 21 records
- August: 16 records
- September: 41 records
- October: 19 records
- November: 1 records
- December: 1 records
Depth and water temperature
Depth
Mostly recorded at 0–65 m · Deepest record: 92 m
Water temperature
Recorded in surface water of 10–29 °C
Names and classification
- English
- Montagu's crab, Black-fingered Crab, Furrowed Crab, Montagu's Crab
Names in 2 more languages
- French
- Crabe couteau, Knife Crab
- Japanese
- オオヒロバオウギガニ
Other scientific names: Xantho incisus
Similar species
Red and White-spotted Reef CrabLophozozymus erinnyes

- Mosaic Reef Crab
Lophozozymus pictor
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).
- 305 open-data records from 1834 to 2024.
- Species data updated November 4, 2026.
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