PORT PHILLIP BAY


Biscuit Star 

Tosia neossia Naughton & O'Hara, 2009

View scientific description and taxonomy

Scientific Details

See below for information.

Taxonomy

Phylum:
Echinodermata
Class:
Asteroidea
Order:
Valvatida
Family:
Goniasteridae
Genus:
Tosia
Species:
neossia

General Description

Arms 5, arm rays merge with disc, pentagonal. Six large plates around the edge between arm tips. Plates on oral surface underneath near the mouth usually covered with granules. Colour frequently brown or black with discrete black, brown, pink, white or cream markings. Centre to arm tip up to 3 cm.

Biology

This species was recently separated from a related species, partly based on its reproductive strategy. Spawning occurs in late winter and broods of embryos are protected in depressions under the adult body.

Habitat

In the open or under rocks in sub-tidal areas, to depth of 26 m.

Reefs

Soft substrates

Distribution guide

South-eastern Australia, including western and central Victoria

Species Group

Seastars and allies Sea stars

Depth

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

Water Column

On or near sea floor

Max Size

6 cm

Diet

Omnivore

Commercial Species

No

Global Dispersal

Native to Australia

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, Biscuit Star, Tosia neossia, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 21 Sep 2017, http://portphillipmarinelife.net.au:8098/species/7767

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