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. This additional information will help inform decisions on where, when, and how the species may be used to minimize risks of them becoming invasive.
The history of invasiveness for Cherax tenuimanus is uncertain. There were records found of introductions and a potential established population but it is unknown if those records and population are correctly identified as C. tenuimanus or C. cainii. There was concern expressed in the literature about the potential negative impacts from the introduced population in South Africa, stemming mainly from diseases and parasites that were infecting the introduced individuals. The climate match is medium with California having an individually high climate match. This species is prohibited in Florida. The certainty of assessment is low. This is due to the uncertainty in applying information published under C. tenuimanus from before the taxonomic split to the currently recognized C. tenuimanus. The overall risk assessment category is uncertain.
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Uncertain Risk
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