Asian basket clam
Corbula (Potamocorbula) amurensis

Key features

  • Shells unequal in size, one is larger than the other with a distinctive overlap
  • Thin & smooth shell (older shells may be wrinkled at edges)
  • Shell colour is dirty white, tan or yellow, no exterior markings
  • Up to 3 cm long


  • Partially buried in soft bottom habitats most abundant on mixed sand & mud bottoms
  • Mostly subtidal, but also intertidal
  • Upper estuarine to fully marine
  • Subtropical to cold temperate waters


  • Reduces planktonic food sources & causes decline in native species

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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