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.
Macrobrachium rosenbergii, the Giant River Prawn, is a freshwater prawn species native to Asia. This species is widely utilized in aquaculture, and it is an economically important species in multiple countries. M. rosenbergii has a low climate match with the contiguous United States It has been introduced in multiple locations outside of its native range due to escapes from aquaculture, but no information is available on the impacts of these introductions. Fishermen in Brazil suggest it may be responsible for the absence of some fish species, but we found no studies investigating this possibility. Certainty of this assessment is low due to lack of studies to assess possible impacts, and the overall risk assessment category is uncertain.
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Uncertain Risk
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