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Phylum Echinodermata > Class Stellaroida > Subclass Ophiuroidea
Bottlebrush brittle star
awaiting identification*
updated Apr 2020

Where seen? This small brittle star with bristley arms is commonly encountered on our Northern shores, in muddy silty areas among seagrasses and seaweeds. Also among coral rubble or on sponges. More active at night, it is fast moving and highly sensitive to light, scurrying swiftly into hiding. Sometimes, many are seen together.

Features: Disk diameter less than 1cm, arms about 2-5cm long. Central disk thick and distinctly petal-shaped. Along the sides of the arms are long cylindrical blunt spines that are held in such a way that the arm resembles a bottlebrush. Many long translucent pointed tube feet emerge along the arm among the spines. In some, the arms have a pattern of hexagons, in others a pair of narrow parallel lines.

The brittle stars on this page are probably from different species. They are grouped together for convenience of display.

Changi, May 09

Upperside of thick central disk.

Long blunt spines held like a bottlebrush
with long tube feet.

Pasir Ris, Jan 09


Long blunt spines held like a bottlebrush
with long tube feet.

Sometimes, many seen together.
Punggol, Jul 11

Sometimes, seen among sponges.
Pulau Sekudu, Aug 03

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

Bottlebrush brittle stars on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Pulau Ubin OBS, Jan 16
Photo shared by Jonathan Tan on facebook.
Terumbu Bemban, Aug 23
Photo shared by Richard Kuah on facebook.

East Coast, Jun 09
Photo shared by James Koh on his blog.

Tanah Merah, Dec 09
Photo shared by Loh Kok Sheng on his blog.
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