Can sharks live in desert rivers?

Yes, the bull shark is known to live in fresh water rivers as well as salt water oceans.be careful if you see one cause ur screwed, they are highly aggressive.

Bull Sharks are known to inhabit the Mississippi in the States, Lake Nicaragua in Central America, the Zambezi in Mozambique/Zambia etc and the Ganges in India.

And if you are swimming in a river and one approaches you then get out its way fast! You could be in for a severe mangling!