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Phylum Echinodermata > Class Stellaroida > Subclass Ophiuroidea
Feather-hitching brittle stars
Ophiomaza cacaotica*
Family Ophiotrichidae
updated Apr 2020

Where seen? This brittle star lives only in a feather star (Class Crinoidea). It has been seen on many different kinds of feather stars on our shores.

Features: Whole animal 2-3cm wide. Five arms with flat spines on the sides. Spines on the tips of the arms are modified into hooks that help the brittle star cling to the feather star host. So far seen in a wide variety of colours and patterns, often matching the host feather star. The animal is poorly studied but it seems to do no harm to the feather star host.

Raffles Lighthouse, Jul 06

East Coast, Jun 13

Sentosa, May 12

Upper side.


Feather-hitching brittle stars on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Changi, Sep 18
Photo shared by Dayna Cheah on facebook.

East Coast Park, Jun 13
Photo shared by Loh Kok Sheng on flickr.

Small Sisters Island, Aug 20
Photo shared byJianlin Liu on facebook.

Kusu Island, Apr 17

Photo shared by Loh Kok Sheng on facebook.

Kusu Island, Jun 21

Photo shared by Jianlin Liu on facebook.

Sisters Island, Sep 13

Photo shared by Loh Kok Sheng on flickr.



  • Lane, David J.W. and Didier Vandenspiegel. 2003. A Guide to Sea Stars and Other Echinoderms of Singapore. Singapore Science Centre. 187pp.
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