Ecological Risk Screening Summary - Cherax barretti (a crayfish, no common name) - Uncertain Risk

Cherax barretti is an Australian crayfish species that has only been reported from the Wessel Islands, off the coast of the Northern Territory. Without any history of introductions outside its native range, nothing is known about potential impacts of its introduction. However, the species is prohibited from transport and possession in multiple U.S. states over concerns about the impacts of introduction of species in the genus Cherax. The climate match to the contiguous U.S. was low, with only southern Florida showing medium match. Overall risk posed by C. barretti is uncertain.

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.