Tiny Rock Crab
Pachygrapsus minutus
- Usual depth0–8 m
- Water temperature22–29 °C
- Best monthsMay, June, and July
- How commonRare
Photo credit: no rights reserved · CC0 1.0 · iNaturalist
About this species
Pachygrapsus minutus is a species of small shore crabs in the family Grapsidae.
Text from the Wikipedia article “Pachygrapsus minutus”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 13 records
- February: 19 records
- March: 17 records
- April: 23 records
- May: 54 records
- June: 34 records
- July: 34 records
- August: 28 records
- September: 15 records
- October: 14 records
- November: 7 records
- December: 10 records
Depth and water temperature
Depth
Mostly recorded at 0–8 m · Deepest record: 8 m
Water temperature
Recorded in surface water of 22–29 °C
Photos
no rights reserved · CC0 1.0 · iNaturalist 
(c) Jenni Ly, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) karliatje, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Jenni Ly, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Jessica Utrup, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Tiny Rock Crab
Names in 3 more languages
- French
- Crabe de rocher minuscule
- Japanese
- ヒメイワガニ
- Simplified Chinese
- 小厚紋蟹
Other scientific names: Nautilograpsus eriantus, Sesarma murrayi
Similar species
Striped shore crabPachygrapsus crassipes
Hairy-fingered Rock CrabPachygrapsus planifrons
Pleated rock crabPachygrapsus plicatus
- Polynesian grapsid crab
Pachygrapsus fakaravensis
Cliff crabGrapsus grapsus
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.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 339 open-data records from 1873 to 2023.
- Species data updated November 5, 2026.
Log what you see on your next dive
The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.