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Phylum Arthropoda > Subphylum Crustacea > Class Malacostraca > Order Decapoda > Brachyurans > Family Sesarmidae
Mound crab
Sarmatium germaini
Family Sesarmidae
updated Dec 2019

Where seen? This spherical crab is seldom seen outside the Mud lobster mounds where it lives.

Features: Body width 3-8cm. It has a round body and flat legs with pointed tips. The pincers are stout and fat.

What does it eat? It eats mangrove leaves, dragging these into its burrow to eat them in peace and quiet.

Status and threats: This crab is listed as 'Endangered' in the Red List of threatened animals of Singapore.

Kranji, Feb 11

Mound crabs on Singapore shores
On wildsingapore flickr

With grateful thanks to N. Sivasothi, Ng Ngan Kee and Pei Yan for identifying this crab.

  • Ng, Peter K. L. and Daniele Guinot and Peter J. F. Davie, 2008. Systema Brachyurorum: Part 1. An annotated checklist of extant Brachyuran crabs of the world. The Raffles Bulletin of Zoology. Supplement No. 17, 31 Jan 2008. 286 pp.
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