Mitten Crabs can be easily confused with other species. The following list of features will help you to identify them:

  • Grey-green to dark brown crab
  • Long walking legs
  • Squarish body up to 86 mm across
  • 4+4+4 pattern of teeth around front of shell (Fig 1.)
  • Dense brown 'fur' on the white-tipped claws (Fig 2.)
  • Habitat: rivers, brackish water estuaries, rarely along the marine inshore coast
  • Juveniles may lack 'fur' on claws

You can download the GB non-native species secretariat (NNSS) Mitten Crab ID guide here.