Asian shore crab (Hemigrapsus sanguineus)

Key features

  • 3 spines on each side of eyes
  • Banding pattern on walking legs & spots on claws
  • Square shaped green/purple to orange/brown shell
  • Shell up to 4 cm wide


  • Under rocks, shells, debris & artificial structures
  • Intertidal to shallow subtidal
  • Estuaries, exposed rocky coasts & tidal flats
  • Tolerates a wide range of temperatures


  • Broad diet, competes with & predates on native species (crabs, fish & shellfish)

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

Report a sighting

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