Brown mussel

Scientific name

Perna perna

Image of Charru mussel. The scientific name, Mytella strigata. This image was taken by DAWE.

Key features

Key features of Brown mussel include:

  • dark brown
  • smooth shell with evenly spaced grooves
  • shell thin at edges and thickens towards narrow end
  • straight and long hinge line
  • around 9cm long but can be 5-17cm long
  • forms dense colonies.


The Brown mussel include:

  • shores and shallow waters
  • often attaches to hard surfaces like buoys, piers, rocks, marinas and port infrastructure but can form colonies on soft surfaces.


The Brown mussel include:

  • fast-growing, displaces native species
  • causes major fouling of wharf pylons, marinas, vessel water intakes, aquaculture etc.
  • can accumulate heavy metals and toxins causing shellfish poisoning if eaten.

Known established populations

The Brown mussel is currently not present in Victoria.

Report a marine pest sighting

Report any unusual marine species immediately using our online reporting system. Early reporting increases the chance of effective control and eradication. Please take good quality photos of the pests or damage to include in your report where possible.

Alternatively, you can call the Agriculture Victoria Customer Service Centre 136 186.

Report a sighting

Page last updated: 06 Jul 2023