Brown mussel

Brown mussel <i>(Perna perna) </i>
Source: Amy Benson US Geological Survey
Brown mussel (Perna perna) Source: Amy Benson US Geological Survey

Marine species not currently found in Australia.

Brown mussel (Perna perna) is a fast growing pest that competes with native species. It fouls navigation buoys, petroleum platforms, wrecks, jetties and other hard surfaces.

This pest can accumulate heavy metals and toxins, causing shellfish poisoning if eaten by humans. This mussel is listed as an Australian Priority Marine Pest.

What to look for:

  • dark brown shell
  • smooth with evenly-spaced growth lines
  • straight and proportionally long hinge
  • thin at edges and thickens towards narrow end
  • around 9 cm long, but can be 5 cm to 17 cm long
  • forms dense groups.

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.

24 hours a day, 7 days a week

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