PORT PHILLIP BAY


Brittle Star 

Ophiarachnella ramsayi (Bell, 1888)

View scientific description and taxonomy

Scientific Details

See below for information.

Taxonomy

Phylum:
Echinodermata
Class:
Ophiuroidea
Order:
Ophiurida
Family:
Ophiodermatidae
Genus:
Ophiarachnella
Species:
ramsayi

General Description

Solid disc, covered in granules, except for the small oval radial shields, arms robust with up to 14 minute arm spines on each side of an arm segment. Two small oval tentacle scales, a series of small pointed oral papillae around each jaw edge. Ventral surface also covered in granules except for the oral and adoral shields. Disc variegated grey or red, arms banded grey and pink, underside pale. Disc to 4 cm diameter and arms to 15 cm long.

Biology

This species is probably a nocturnal carnivore.

Habitat

Rocky reefs, under large rocks, to depth of 73 m.

Reefs

Coastal shores

Distribution guide

Southern and eastern Australia but rarely found in Victoria and Tasmania.

Species Group

Seastars and allies Brittle stars

Depth

Shore (0-1 m)
Shallow (1-30 m)
Deep ( > 30 m)

Water Column

On or near sea floor

Max Size

4 cm

Diet

Carnivore

Commercial Species

No

Global Dispersal

Native to Australia

Species Code

MoV 2749

Identify

Conservation Status

  • DSE Advisory List : Not listed
  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed

Author

article author O'Hara, T.

Dr. Tim O'Hara is a Senior Curator of marine invertebrates at Museum Victoria.

citation

Cite this page as:
O'Hara, T., 2011, Brittle Star, Ophiarachnella ramsayi, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 17 Aug 2017, http://portphillipmarinelife.net.au:8098/species/6607

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