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.
Protochondrostoma genei is a freshwater fish native to Italy and Slovenia. The population in Slovenia has exasperated due to the introduction of nonnative species. P. genei has been introduced itself to nonnative areas of Italy where it has become established. This species has become a pest species and is associated with the decline of multiple species in their introduced range. The history of invasiveness is therefore High. The overall climate match for the contiguous United States is High with the following States receiving individually high Climate 6 scores: Arkansas, Connecticut, Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, Missouri, North Carolina, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia. The certainty of assessment is high. The overall risk assessment for Protochondrostoma genei is High.