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Floral
egg crab
Atergatis floridus
Family
Xanthidae
updated
Dec 12
if you
learn only 3 things about them ...
These crabs are poisonous to eat! Their toxins are NOT
destroyed by cooking.
They are generally secretive and slow-moving.
They
are not venomous but it's best not to touch them. |
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Where
seen? This round well-camouflaged crab is commonly seen
on our Southern shores, among coral rubble or reefs. But it is usually
not as numerous as the Red egg crab
(Atergatis integeriimus). It is more active at night.
Features: Body width 8-10cm. Large
oval body, smooth and brown with a fine network of lines in blotches
in white, cream or yellow that forms a floral pattern. Males may have
larger pincers. Juveniles are light brown with a white band around
the edge of the body. Like most other Xanthid crabs, it is highly
poisonous and should not be eaten.
What does it eat? Although it
is described as a vegetarian, one was seen happily eating a fish.
Like other Xanthid crabs, it is poisonous and should not be eaten.
Status and threats: This crab
is listed as 'Vulnerable' on the Red List of threatened animals of
Singapore. |

Sentosa, May 04

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A pair of mating egg crabs.
Cyrene Reef, Jul 10
Photo shared by James Koh on his
blog.
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A juvenile Brown egg crab.
Tuas, Nov 03
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Floral
egg crabs on Singapore shores
Links
References
- Lim, S.,
P. Ng, L. Tan, & W. Y. Chin, 1994. Rhythm of the Sea: The Life
and Times of Labrador Beach. Division of Biology, School of
Science, Nanyang Technological University & Department of Zoology,
the National University of Singapore. 160 pp.
- Gopalakrishnakone
P., 1990. A
Colour Guide to Dangerous Animals
.
Venom & Toxin Research Group, Faculty of Medicine, National
University of Singapore. 156 pp.
- Davison,
G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore
Red Data Book: Threatened plants and animals of Singapore.
Nature Society (Singapore). 285 pp.
- Chuang, S.
H., 1961. On
Malayan Shores
.
Muwu Shosa, Singapore. 225 pp., plates 1-112.
- Davison,
G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore
Red Data Book: Threatened plants and animals of Singapore.
Nature Society (Singapore). 285 pp.
- Jones Diana
S. and Gary J. Morgan, 2002. A Field Guide to Crustaceans of
Australian Waters. Reed New Holland. 224 pp.
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