species: Ophiomastix sp. in taxonomy (Lizard Island Field Guide)
Ophiomastix sp.

©Anne Hoggett: Ophiomastix sp. from under rubble at Lizard Island. Disc diameter is about 12 mm.

©Anne Hoggett: Underside of Ophiomastix sp. at Lizard Island

©Anne Hoggett: Ophiomastix sp. at MacGillivray Reef near Lizard Island
Kingdom Animalia
Phylum Echinodermata
Class Ophiuroidea
Order Ophiurida
Family Ophiocomidae
Genus Ophiomastix
Species Ophiomastix sp.

Distinguishing features

A moderately-sized brittlestar that is usually found under slabs of rubble on sand. Colour pattern is distinctive: deep red/mauve with arm plates outlined in white, arms and arm spines both banded red/mauve with white. Some arm spines are expanded at the tip in large specimens.

This may be Ophiomastix variabilis or a different colour form (and habitat) of Ophiomastix annulosa. Both have been recorded from Lizard Island.


  • Size data has not been obtained.

Depth range

  • Depth range data is not yet available.



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