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.
Declared noxious under the Fisheries Management Act 2007. Noxious species are a severe threat to the natural environment and industries. They cannot be held or traded in South Australia without specific authorisation and must not be returned to the water if caught.
Characteristics:
- Juveniles are yellow to orange with purple markings
- Adults are yellow
- 5 arms with pointed, upturned lips
- Up to 50 cm across