Asian green mussel (Perna viridis)

Key features

  • Juvenile shell bright green; older shells dark green to brown
  • Smooth exterior with concentric growth lines
  • Adults 8–16 cm long


  • Hard substrates (vessels, artificial structures, wharves, aquaculture equipment, intake pipes, buoys, etc.)
  • Low tide mark to 42 m depth, lower estuarine to marine
  • Tropical to warm temperate


  • Fast growing & outcompetes native species, forming dense colonies
  • Can clog seawater cooling pipes and intake systems

Known locations

  • Not yet in Australia

What you can do

  • Inspect & clean niche areas & antifoul your vessel regularly
  • Clean & dry equipment before transporting & using in a different location

Learn more

Read the national biofouling management guidelines for your sector.

Report immediately Outside known locations!

  • Note the exact locations
  • If possible, collect a sample and freeze in a plastic bag or take a photo
  • See for your state contacts

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