Ecological Risk Screening Summary - Silver Bream (Blicca bjoerkna) - Uncertain Risk

Ecological Risk Screening Summary - Silver Bream (Blicca bjoerkna) - Uncertain Risk
Ecological-Risk-Screening-Summary-Silver-Bream.pdf893.06 KB

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.

B. bjoerkna is a fish native to Europe and Asia. It frequents stagnant waters of lakes and reservoirs, rivers and canals with calm waters. The species was introduced in Spain, northeastern Italy, and France. It is reported to spread in areas where introduced. B. bjoerkna is reported to be unpopular with commercial fishers and anglers due to small size and competition with more desired species and it regularly hybridizes with Vimba vimba. More research on the impacts from introductions of this species is needed; absence of this research makes the certainty of this assessment low. Climate match with the United States is high. Overall risk posed by this species is uncertain.

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Uncertain Risk
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