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.
Neogobius pallasi, the Caspian Monkey Goby, is a freshwater fish native to the Caspian Sea and Volga River drainage. It is reportedly the most commercially important goby in the Caspian Sea. This species was, until recently, designated a subspecies of Neogobius fluviatilis, which is considered invasive in many locations in Europe. N. pallasi has been introduced and become established in the Aral Sea. Further information on this introduction and impacts, if any, are not available. History of invasiveness is “None Documented.” N. pallasi has a high climate match with the contiguous United States. Areas of high and medium match are found in the West and Southern Great Plains. Certainty of assessment is low due to a lack of information on both impacts of introduction and distribution. Overall risk assessment category for this species is uncertain.
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Uncertain Risk
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