crabs text index | photo index
Phylum Arthropoda > Subphylum Crustacea > Class Malacostraca > Order Decapoda > Brachyurans > Family Portunidae
Blood-spotted swimming crab
Portunus sanguinolentus*
Family Portunidae
updated Dec 2019
Where seen? This oddly marked swimming crab is not often encountered on the intertidal.

Features: Body somewhat fan-shaped, with 9 spines on the sides. The eyes not far apart. Last pair of legs are paddle-shaped and rotate like boat propellers. Body with three large red spots.

Kusu Island, Jun 15

Photo shared by Marcus Ng on facebook.

*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

Grateful thanks to Marcus Ng for the photo and Dr Joelle Lai for the identification.

links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008