Ecological Risk Screening Summary - Potamoglanis johnsoni (a catfish, no common name) - Uncertain Risk

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.

Potamoglanis johnsoni is a species of catfish native to South America in the Paraguay River basin. There is little information available on the biology of the fish. The history of invasiveness is classified as No Known Nonnative Population. There have been no reports of the species outside of its native range. P. johnsoni is listed as a prohibited nonnative species in Florida. Climate match to the contiguous United States is medium. However, the match for the majority of the contiguous United States was low with the only areas of medium or high match in southern Texas or Florida. The certainty of assessment is low due to lack of information. The overall risk for this species is Uncertain.