Galloping
sea star
Stellaster childreni
Family Goniasteridae
updated Jul 2020
Where
seen? This sea star was seen once on Sentosa. Previously recorded from trawls
in the Johor Straits and off the Southern Islands. It is broadly distributed
in the Indo-Pacific from East Africa to Australia and southern China
and Japan. According to Marsh and Fromont, it is found on mud or muddy sand in Austrlia. It was previously called Stellaster equestris.
Features: Diameter with arms about
8cm. It has long skinny arms with large smooth marginal plates on
the edges and sparse short stumpy spines.
The underside is white and smooth with colourful markings. It has
short tube feet tipped with suckers. As its common name suggests,
it does indeed 'gallop', moving in a series of jerks or leaps through
synchronised stepping action of its tube feet.
Where
seen? According to Marsh and Fromont, the stomach has been seen filled with sand, mud and foraminfera. |
Pulau Semakau,
Aug 11 |
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Sentosa, Apr
10 |
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Pale underside with colourful markings
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Tube feet with sucker tips.
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Galloping
sea stars on Singapore shores |
Links
References
- Loisette M. Marsh and Jane Fromont. Field Guide to Shallow Water Seastars of Australia. 2020. Western Australian Museum. 543pp.
- Lane, David
J.W. and Didier Vandenspiegel. 2003. A
Guide to Sea Stars and Other Echinoderms of Singapore.
Singapore Science Centre. 187pp.
- Didier VandenSpiegel
et al. 1998. The
Asteroid fauna (Echinodermata) of Singapore with a distribution
table and illustrated identification to the species. The Raffles
Bulletin of Zoology 1998 46(2): 431-470.
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