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.
Short tailed river stingray (Potamotrygon brachyura) is a freshwater stingray native to South America. This large stingray is used as a subsistence fishery in its native range and is also present in the ornamental trade. There were no records of trade in the United States found. However Florida does list P. brachyura as ‘Conditional’, meaning that possession is prohibited without a special permit. The history of invasiveness is classified as No known nonnative population. There were no documented introductions found. P. brachyura is listed as a conditional species in Florida which prohibits possession without a special permit. The climate match within the contiguous United States is high, and highest in the Southeastern United States. The certainty of assessment is low because of the limited amount of data available for the species. Due to a paucity of information, the overall risk assessment category for this species is Uncertain at this time.