Ecological Risk Screening Summary - Zebra Crayfish (Cherax papuanus) - Uncertain Risk

Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments.

Cherax papuanus is a crayfish native to a lake in central Papua New Guinea. The species is present in the aquarium trade in the United Kingdom, but has not been reported elsewhere outside its native range except as a misnomer for another species of crayfish in the Czech pet trade. Florida prohibits possession or trade of C. papuanus. C. papuanus has an overall low climate match with the contiguous U.S. and impacts of introduction remain unknown. The overall risk assessment is uncertain.