PORT PHILLIP BAY


Seastar 

Allostichaster polyplax (Müller & Troschel, 1844)

View scientific description and taxonomy

Scientific Details

See below for information.

Taxonomy

Phylum:
Echinodermata
Class:
Asteroidea
Order:
Forcipulatida
Family:
Asteriidae
Genus:
Allostichaster
Species:
polyplax

General Description

Arms typically 8, discrete finger-like, frequently of different lengths. Disc small. Variable colour with shades of grey, brown or red, and black, greenish-grey, cream or white markings. Centre to arm tip up to 5 cm.

Biology

This species' scientific name means "many arms". It has fissiparous reproduction where the animal divides in two to create new individuals.

Habitat

Under-surface of rocks, including the lower intertidal zone, to depth of 238 m.

Reefs

Coastal shores

Distribution guide

Southern Australia.

Species Group

Seastars and allies Sea stars

Depth

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

Water Column

On or near sea floor

Max Size

10 cm

Diet

Carnivore

Commercial Species

No

Global Dispersal

Recorded in Australia

Species Code

MoV 1684

Identify

Conservation Status

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

Author

article author O'Loughlin, P. M.

Mark O'Loughlin is an Honorary Associate in marine invertebrates at Museum Victoria.

citation

Cite this page as:
O'Loughlin, P. M., 2011, Seastar, Allostichaster polyplax, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 23 Jul 2017, http://portphillipmarinelife.net.au:8098/species/4685

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