Ecological Risk Screening Summary - Prussian Carp (Carassius gibelio) - High Risk

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.

Prussian Carp (Carassius gibelio) is native to Europe and parts of Asia and has been widely introduced throughout those two continents for centuries. The history of invasiveness is high. This species is responsible for the decline of some native cyprinid species and quickly establishes itself in new habitats as the result of a high reproductive rate. Its ability to reproduce via gynogenesis increases risk of rapid spread and rapid population increases. C. gibelio was listed as an injurious wildlife species in 2016 under the Lacey Act by the U.S. Fish and Wildlife Service, thereby prohibiting its importation. The climate match score was high within the contiguous United States. There were very few locations of low match, primarily around the Gulf Coast and Pacific Northwest. The certainty of assessment is high. The overall risk assessment category is high.