This is not good news for Sweden, as it suggests Marmorkrebs are gaining a beachhead in that country.
External links
Nya fynd av misstänkt marmorkräfta har hittats i Västsverige
New Discoveries of Marbled Crayfish Cause Concern in Northern Europe (Note: English language press releases from this site do not appear to be archived as well as the Swedish language ones are.)
Picture from Swedish Agency for Marine and Water Management.