Ecological Risk Screening Summary - Potamotrygon signata (a stingray, 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.

Potamotrygon signata is a freshwater stingray endemic to the Parnaíba River basin in northern Brazil. There is no fishery directed towards P. signata and no indication that they are in trade. There is some by-catch from fishing, and some of these individuals may be consumed. Injuries to humans from stingray stings are possible, leading to some of the by-caught individuals being killed. This species is regulated in multiple States. There have been no reports of introductions. History of invasiveness is classified as No Known Nonnative Population. The climate match with the contiguous United States is low, with no areas of medium or high match. Limited information is currently known about P. signata causing the certainty of this assessment to be low. The overall risk assessment category for Potamotrygon signata is Uncertain.