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.
Trichomycterus yuska is a catfish endemic to mountain streams in Catamaca, Argentina. History of invasiveness is uncertain because there have been no reports of introductions of T. yuska beyond its native range and the species is not known to be in trade. Several U.S. States prohibit or restrict the possession, transport, or trade of this species along with other members of the family Trichomycteridae. T. yuska has a low climate match with the contiguous United States. Certainty of assessment is low due to lack of information about the species. Given the low climate match and uncertainty about its impact if introduced, the overall risk assessment category for Trichomycterus yuska is uncertain.