Red king crab

Paralithodes camtschaticus

Overview

  Photo Credit: ©Lis Lindal Jorgensen
Paralithodes camtschaticus
Habitat:
  • Marine, polar and temperate habitats. Capable of living in both warm water and cold water.

Description:
  • It has a fused head and thorax, a fan shaped tail, 5 sets of appendages, the first two are pincers, the right is usually larger than the left, and three pairs of walking legs. The body is generally red/brownish. It grows up to 22cm on carapace (shell) length and over 10kg. 

Origin and Distribution:
  • Originates from the Northern Pacific and Bering Sea. Known to have become invasive in the Russian and Norwegian southern Barents Sea.

Impacts:
  • This species is capable of consuming large amounts of prey items. Adults are opportunistic, omnivorous feeders eating what is most readily available.
  • Adult crabs are active and consequently, where there are low densities of available food, they may swiftly migrate, by walking rapidly on the long legs, to a different and less exploited region where food is more abundant. This enables the adult crabs to exploit considerable areas of sea bottom.

How might it get here?
  • The species was originally intentionally introduced to Russia but the most likely way it will arrive in Ireland is by natural dispersal. It is unclear at present if this species will be able to survive in Irish waters.
  • The island of Ireland lies on a biogeographical boundary and waters may be too warm.

Is it found in Northern Ireland?
  • It is not present in Northern Ireland.

Prevent Spread:
  • Report all sightings.

You can help by reporting any sightings: @ the Centre for Environmental Data & Recording (CEDaR) - Or via the iRecord App.   For further queries, you can contact the Invasive Non Native Species (INNS) Team in the Northern Ireland Environment Agency on 028 9056 9558 or Email: invasivespecies@daera-ni.gov.uk
Invasive Species Northern Ireland

Invasive Species Northern Ireland