Asian basket clam

Body contents

Asian basket clam Corbula (Potamocorbula) amurensis competes with native species for food and space. It is highly adaptable and can form extremely dense aggregations on most areas except hard surfaces.

It is associated with significant changes in plankton productivity in areas it has invaded overseas. It may have prevented reestablishment of benthic communities after flooding in some areas.

What to look for


  • dirty white, tan or yellow
  • no exterior markings
  • shells are unequal in size, with a distinctive overlap
  • thin and smooth
  • up to 3cm.
Asian basket clam
Asian basket clam

Where to look

Look in or around:

  • mud
  • sand.

Likely habitats include:

  • partially buried in sediments
  • shores and shallow waters
  • cold temperate to subtropical waters.

Similar native species

These native species look similar to Asian basket clam. They do not need to be reported.

Serracorbula verconis

Asian basket clam


  • white with small, translucent brown spots
  • one side of shell is larger and overlaps the other
  • concentric grooves
  • solid, glossy shell that is hard to crush
  • up to 10cm long.


  • mud
  • sand
  • up to 65m deep.

Known locations are northern to southern Queensland and South Australia.

Paphies species

Asian basket clam


  • white or cream shell with brown covering
  • interior white
  • up to 2.5cm long.


  • sandy shores.

Known locations are New South Wales, Victoria, Tasmania, South Australia and Western Australia.

Tellina semitorta

Asian basket clam


  • usually white, sometimes pink shell
  • up to 1.6cm long.


  • sandy shores.

Known locations are South Queensland to New South Wales, Victoria and South Australia.


Report it

See something unusual? Report it. Even if you’re not sure.

If you see something you think is a pest:

  • note the exact location (screenshot your map app or enable photo geotagging on your phone)​
  • take a photo (use something for size reference, like a coin or note)
  • contact your state or territory authority.



Stop the spread of marine pests

Start with these simple steps:

  • Inspect and clean your boat or yacht. Make sure you check hard to reach areas.
  • Treat the hull of your boat or yacht regularly.
  • Clean and dry your fishing and diving gear after every use.

How you can stop the spread of marine pests.

Your location

Check our marine pests map.

The map shows known pests and pests to look for around Australia.

asian basket clam

Asian basket clam (Corbula (Potamocorbula) amurensis)

Not established in Australia

Features: Shells unequal in size, with a distinctive overlap. Thin shell, smooth, dirty white, tan or yellow. No exterior markings. Up to 3cm long.
Habitat: Partially buried in soft bottom habitats, prefers mixed sand and mud.
Affects: Reduces plankton food sources, affecting important fish species.
Movement: Vessels.