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.
Establishment and impacts in Europe documented. The main impacts of concern are effects predation on prey fish, competition with predators, disease transmission, and habitat alteration. S. glanis has been purposefully stocked, and inadvertently stocked in the wild along with other species. S. glanis is a species that could potentially be imported for sport fishing, aquaculture, live food trade, or use in the pet trade.
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High Risk
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