Species that are considered high risk have a well-documented history of invasiveness in at least one location globally, and a high or medium climate match to the contiguous United States.
Opsariichthys uncirostris is a cyprinid fish native to the Korean Peninsula, northern China, eastern Siberia, and parts of Japan. The species has been introduced to Tashkent, Uzbekistan, and to Kyushu Island, Japan. Introduction typically occurs accidentally through the aquaculture pathway when O. uncirostris contaminates shipments of other species. Impacts of introduction are suggested to be detrimental to native species in Uzbekistan, but details are lacking. O. uncirostris preys on several native, threatened species on Kyushu Island in Japan, providing evidence of a negative impact of introduction. Climate match to the contiguous U.S. is medium overall, with areas of highest match occurring in central and southern California. Overall risk posed by this species is uncertain.
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High Risk
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