Ecological Risk Screening Summary - Trichomycterus alternatus (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.

T. alternatus is a trichomycterid catfish with a limited native distribution in eastern Brazil. It has not been introduced outside of its native range. Without being able to observe introductions in other parts of the world, it is impossible to know the potential impacts of introduction of T. alternatus to the U.S. The Florida Fish and Wildlife Conservation Commission has listed the parasitic catfish T. alternatus as a prohibited species. T. alternatus has a medium climate match with the contiguous U.S. The overall risk posed by this species is uncertain.