Ecological Risk Screening Summary - Hypostomus asperatus (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.

Hypostomus asperatus is a catfish native to the Tocantins River basin in Brazil. This species has no documented history of introduction in the United States or elsewhere outside its native range, and it is not known to be in trade. However, unidentified species of Hypostomus are established in the United States. Climate match to the contiguous United States was low overall, with the highest match in southern peninsular Florida. Because of the lack of documented introduction history and substantial taxonomic uncertainty, certainty of this assessment is low and overall risk is uncertain.