River Stingrays [Plesiotrygon]

Description

Plesiotrygon is a genus of stingrays primarily known for their adaptation to freshwater environments, unlike most members of the Dasyatidae family, which are marine. These stingrays inhabit rivers and freshwater bodies in South America. River stingrays have adapted to their unique freshwater habitats with physiological and behavioral traits that differ from their marine relatives. They are characterized by their smooth, rounded bodies and the absence of the distinctive venomous spine found in many other stingray genera.