Rough Rock Crabs are active during the day. When a male finds a female to mate with, he carries her around between his claws until she moults and is ready to mate.

At a glance

Habitat Can be found underwater on the seafloor out to a depth of around 30m
Size A carapace width of up to around 8cm
Origin Native
Distribution Southern Australia including around Tasmania
Descriptions
Distribution
Southern Australia including around Tasmania
Habitat
Can be found underwater on the seafloor out to a depth of around 30m
Size
A carapace width of up to around 8cm
Common Name Rough Rock Crab
Aliases No Known Aliases
Origin Native
Conservation No Conservation Status
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Articles

Articles

Identifying Crabs at Tomahawk Beach
Distribution and map

Distribution provided by The Atlas of Living Australia

Classification

Classification

KingdomAnimalia
PhylumArthropoda
SubphylumCrustacea
SuperclassMulticrustacea
ClassMalacostraca
SubclassEumalacostraca
SuperorderEucarida
OrderDecapoda
SuborderPleocyemata
InfraorderBrachyura
SectionEubrachyura
SuperfamilyPortunoidea
FamilyCarcinidae
GenusNectocarcinus
SpeciesNectocarcinus integrifrons
Synonyms

Synonyms

Nectocarcinus melanodactylus A. Milne Edwards, 1860
Portunus integrifrons Latreille, 1825
References and dates
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Added Sun 24 Aug 2025 @ 00:18 AM
Updated Wed 24 Dec 2025 @ 08:32 AM
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Files
Type Details Version Size Added Updated Links
26 Common Crabs of Tasmania Poster
An A3 poster of the 26 common crabs of Tasmania
 1.0.1 8.2 Mon 12 Jan 2026 Mon 12 Jan 2026 Download Info

Disclaimer: A lot of work goes into trying to identify and ensure accurate identifications are made, and that the listed Descriptions, Sizes, Habitats and Distribution information is as accurate and valid as possible. Unfortunately, information in this arena is ever changing and as such no guarantee can be offered that it is correct or currently valid — the information is provided as a guide, and it is always suggested that you do a little research to ensure you have the latest and most accurate information. View the references or bibliography. Feedback and comments on the information provided are always welcome.