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 (oral plates) usually covered with granules. Usually two colours in alternating bands, as combinations of brown, black, pink, or cream markings. These bands distinguish it from the related Tosia australis which may be similarly coloured but in a star-burst pattern. 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.

Distribution

South-eastern Australia.

Habitat

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

More Information

  • Animal Type

    Seastars & allies

  • Animal SubType

    Seastars

  • Brief Id

    Arms 5, pentagonal, 6 plates along edge between arm tips, oral plates granular, usually two colours.

  • Colours

    Brown, White, Black

  • Habitats

    Reefs

  • Diet

    Carnivore

  • Diet Categories

    Encrusting Invertebrates, Sponge

  • Endemicity

    Native to Australia

  • Commercial

    No

  • Depths

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

  • Water Column Locations

    On or near seafloor

  • Taxon Name

    Tosia neossia

  • Scientific Author

    Naughton & O'Hara, 2009

  • Common Name

    Biscuit Star

  • Phylum

    Echinodermata

  • Class

    Asteroidea

  • Order

    Valvatida

  • Family

    Goniasteridae

  • Genus

    Tosia

  • Species Name

    neossia