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Coral
ghost shrimp
Corallianassa sp.
Family Callianassidae
updated
Oct 2019
Where
seen? The smooth burrow of this large, brightly coloured
animal is sometimes seen among rubble near living reefs on our Southern
shores. But animal itself is seldom seen out in the open. Often, all
you might glimpse is just the tip of a bright orange claw in the distinctive
burrow. At night, however, you may spot one near the burrow entrance
as it does some housekeeping, or even wandering about outside.
Features: 4-6cm long. Long abdomen
with broad tail, a pair of larger pincers, usually one much larger
than the other. Pincers usually bright orange, smaller appendages
and antennae banded orange. Body translucent, white or yellowish.
It digs long, smooth sided burrows in solid coral rubble. The burrows are said to be complex. The burrow
looks like a PVC pipe! Thanks to Dominik Kneer who shared that they achieve this by gluing sand grains together, their legs give off a sticky mucus. He also shared that a similar looking animal, Axiopsis (see photo below), cannot do that, instead they build something like a brick wall by picking up larger pieces and vibrating them in place to keep the burrow walls together.
Coral ghost shrimp food: Most ghost shrimps species eat
detritus and bacteria or on decaying seagrass and seaweeds.
Human
uses: In Australia, some species are caught by fishermen
and used as bait. |
Sentosa, May 04 |
Digging
out the burrow?
Sentosa, May 04 |
Pulau Hantu, Jun 08 |
Burrow is smooth and looks like a PVC pipe by gluing sand grains.
Pulau Hantu, Aug 03
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This is Axiopsis serratifrons
Builds burrows like a brick wall.
Sister Island, Jul 04
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Coral
ghost shrimps on Singapore shores |
Other sightings on Singapore shores |
Labrador, Nov 20
Photo shared by Vincent Choo on facebook. |
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Sisters Island, Aug 08
Photo shared by Marcus Ng on his
blog. |
Small Sisters Island, May 18
Photo shared by Dayna Cheah on facebook.. |
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Cyrene Reef, Jul 14
Photo shared by Heng Pei Yan on facebook. |
Cyrene Reef, Apr 24
Photo shared by Tommy Arden on facebook. |
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Pulau Sudong, Dec 09 |
Pulau Pawai, Dec 09 |
Pulau Salu, Aug 10 |
Acknowledgements
Grateful thanks to Dominik Kneer for correcting the identification of these animals. Those with orange claws are not Glypturus as originally stated, but a species of Corallianassa. One of the animals is identified as Axiopsis serratifrons in another Family Axiidea. Family Callianassidae and Family Axiidae belong in infraorder Axiidae.
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.
- Jones Diana
S. and Gary J. Morgan, 2002. A Field Guide to Crustaceans of
Australian Waters. Reed New Holland. 224 pp.
- Debelius,
Helmut, 2001. Crustacea
Guide of the World: Atlantic Ocean, Indian Ocean, Pacific Ocean
IKAN-Unterwasserachiv, Frankfurt. 321 pp.
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