Ecological Risk Screening Summary - Hypostomus regani (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 regani is a catfish native to the Paraná, Paraguay and Uruguay River basins of South America. The species is present in the aquarium trade internationally, but it was not found in trade in the United States. H. regani has been introduced in the São Francisco River basin in eastern Brazil, but no information is available on impacts of the introduction. Additionally, unidentified species of Hypostomus are established in the United States. Climate match to the contiguous United States was medium overall, with high match in peninsular Florida and along the Gulf Coast. It is possible that the climate match could increase if more georeferenced occurrences from the southern portion of the species range became available. Because of the lack of documented introduction history and substantial taxonomic uncertainty, certainty of this assessment is low and overall risk is uncertain.