Plectaster decanus

Echinasteridae
Mosaic Seastar
  • Plectaster decanus, Devonport, TAS, Photo: Rick Stuart-Smith
    Plectaster decanus, Devonport, TAS, Photo: Rick Stuart-Smith
  • Plectaster decanus, Dunsborough, WA, Photo: Graham Edgar
    Plectaster decanus, Dunsborough, WA, Photo: Graham Edgar
  • Plectaster decanus, Jervis Bay, NSW, Photo: Graham Edgar
    Plectaster decanus, Jervis Bay, NSW, Photo: Graham Edgar
  • Plectaster decanus, Bass Point, NSW, Photo: Graham Edgar
    Plectaster decanus, Bass Point, NSW, Photo: Graham Edgar
  • Plectaster decanus, Bass Strait, TAS, Photo: Graham Edgar
    Plectaster decanus, Bass Strait, TAS, Photo: Graham Edgar
  • Plectaster decanus, Batemans Bay, NSW, Photo: Andrew Green
    Plectaster decanus, Batemans Bay, NSW, Photo: Andrew Green
  • Plectaster decanus, Stanley, TAS, Photo: Rick Stuart-Smith
    Plectaster decanus, Stanley, TAS, Photo: Rick Stuart-Smith
Distribution
Temperate Australasia
Description
Strikingly patterned species with rows of granules forming a network of orange ridges across the upper surface. Between the ridges are clusters of purple or red papules, forming a mosaic effect.
Information
  • Max Size: 24 cm
  • Sea Temperature Range: 12.5-23.3°C
  • Depth: 0-200m
  • Habitat: Rocky Reef
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Common (34% of sites)
    Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
  • Abundance: Solitary (1 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney
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