Lucky (or unlucky depending on your fishing preferences) it wasn't a Bull Shark.
Nat Geo says they found Bull Sharks alive and swimming waaay up freshwater rivers.
While bull sharks are commonly found along coastlines, bays, and harbors, they also frequent a most uncommon shark habitat—freshwater rivers.
The species has been spotted 2,500 miles (4,000 kilometers) up the Amazon River in South America and dwell in Lake Nicaragua, a freshwater lake in Central America. Bull sharks have traveled up the Mississippi River as far north as Illinois and are regularly spotted in India's Ganges.
https://www.nationalgeographic.com/animals/article/shark-attack-threats-bull-sharks-location