Mongolia

S1 E4: Robson heads to the biggest landlocked country in the world, and some of the most pristine rivers in Central Asia, on a mission to catch a trio of territorial river warlords. Top of the list is the Taimen, or River Wolf, one of the great prizes in international angling. Mongolians revere the Taimen as the god of the river: it's a huge, ferocious salmonid that can reach two meters in length. To cat