ITV4 River Monsters Catch up on the ITV Hub Extreme angler, Jeremy Wade, is on the hunt for freshwater fish with a taste for human flesh. 2 episodes available to watch Share this programme: Share on Facebook Share on Twitter Share on Google+ Series 6 Latest 1. Amazon Titanic Mon Monday 5 Sept 9pm Jeremy Wade investigates the sinking on the Amazon of the Sobral Santos. Series 4 4. Mongolian Mauler Sun Sunday 25 Sept 1.10pm In Mongolia, Jeremy Wade investigates a rare giant fish.