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 itacua is a catfish native to the Rio de la Plata basin in Argentina and possibly Paraguay and Brazil. This species has no documented history of introduction in the United States or elsewhere outside its native range. However, unidentified species of Hypostomus are established in the United States. History of invasiveness is uncertain. H. itacua does not appear to be present in trade in the United States or elsewhere. No climate matching analysis was conducted due to a lack of species occurrence data. Because of the lack of documented introduction history and substantial taxonomic uncertainty, certainty of this assessment is low and overall risk is uncertain.