Ecological Risk Screening Summary - Potamotrygon henlei (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 henlei is a species of freshwater stingray found in the Tocantins River basin in central Brazil. P. henlei is part of the ornamental aquarium trade, including in the United States. The venom and mucus of P. henlei is used in research. The spine on the tail of the stingray is coated in venom and is capable of inflicting wounds on humans. P. henlei opportunistically feeds on fish caught in gillnets. P. henlei is listed as a Conditional species in Florida. The history of invasiveness is classified as No Known Nonnative Population. There were no records of introduction found. While this species is in trade, the reported trade volume was relatively low which is maintained by export quotas in Brazil. The climate match with the contiguous United States was low. The only area of medium climate match was in southwestern Florida The certainty of assessment is low. The overall risk assessment category is uncertain.