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.
Siniperca chuatsi, the Mandarin fish, is a freshwater perch native to the Pearl and Amur River basins in China and Russia. This species is used in aquaculture and is host to several parasites and diseases. S. chuatsi has not been recorded as introduced or established in the wild of the United States but can be found for sale in the Aquarium trade from multiple sources. S. chuatsi is regulated in Alabama and Texas. It has been reported as introduced to Taiwan, but no other information regarding that introduction has been documented. It is hypothesized that this introduction could have socioeconomic effects and that this species can prey upon native species, but that is not confirmed. For that reason, the history of invasiveness is classified as Data Deficient. S. chuatsi has a High to medium climate match within the contiguous United States with the Northern Midwest and Florida region having the highest match. The overall Climate 6 score for the contiguous United States is High. The certainty of assessment is Low because of the lack of impacts of introductions. The overall risk assessment category for S. chuatsi is Uncertain.
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Uncertain Risk
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