Northern Pacific Seastar

Northern Pacific Seastar (<i>Asterias amurensis</i>)
Northern Pacific Seastar (Asterias amurensis)

Marine species not currently found in South Australia.

The Northern Pacific Seastar is widely established in Tasmania and also Port Phillip Bay (Melbourne) in Victoria. Population densities can reach tens of millions. The Northern Pacific Seastar predates on native species, particularly shellfish. This established seastar is listed as an Australian Priority Marine Pest.

What to look for:

  • yellow to orange with purple markings (juvenile)
  • yellow (adult)
  • 5 arms with pointed upturned lips
  • up to 50 cm across.

Report suspected exotic species and diseases

Early detection is important to stop the establishment and spread of aquatic pests and diseases – report unusual sightings immediately.

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Fishwatch hotline: 1800 065 522 SA Fishing app
Page Last Reviewed: 23 Jun 2023
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