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.
Esox reichertii, the Amur Pike, is a freshwater fish species native to the Amur River drainage in Russia and China, Sakhalin Island in Russia, and the Onon and Kherlen drainages in Mongolia. This species is used as a game and commercial fish for human consumption. E. reichertii was stocked in Pennsylvania for sport fishing, but the population failed. Hybrids of E. reichertii and the Northern Pike, E. lucius, were also stocked in Pennsylvania, and are most likely extirpated as well. No information is available on negative impacts of these introductions. No other introductions have been confirmed. E. reichertii has a high climate match with the contiguous United States. The area of highest match was located in the northern Midwest and upper Great Plains. Certainty of this assessment is low because of the lack of information from which to base an assessment of the invasive potential of this species. The overall risk assessment category is uncertain.
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Uncertain Risk
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