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 dispar is a crayfish native to southern Queensland, Australia. It is common in small streams, and is reported to be territorial and aggressive. No introductions of C. dispar have been reported, so no impacts of introductions are yet known. Along with other Cherax species, C. dispar is listed as a prohibited species in multiple U.S. states. Climate match to the contiguous U.S. is medium overall, with the highest matches occurring in Florida and Texas. Overall risk posed by C. dispar is uncertain given the lack of information on impacts of introduction.
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Uncertain Risk
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