River Stingrays [Potamotrygonidae]

Description

Potamotrygonidae, or river stingrays, are unique among stingrays for inhabiting freshwater environments, specifically rivers and lakes in South America. They have rounded or oval pectoral fin discs and are well-adapted to a benthic lifestyle, often camouflaged against the sandy or muddy bottoms. River stingrays feed on invertebrates and small fish, and they possess venomous stingers for defense. Their adaptation to freshwater environments is a notable divergence from the predominantly marine habitats of other stingray families.

Genera

Taxonomy