Fans of River Monsters know On Sunday night’s Mighty Rivers, host Jeremy Wade is searching for the endangered huchen or Danube salmon, a large species of freshwater fish in the salmon family.

1. Demon Fish - Jeremy Wade journeys up the Congo River in search of the ferocious Goliath Tiger Fish, but he will need the help of a local witch doctor to catch one. More info ...

Jeremy Wade ... The model for “River Monsters” however, was more straightforward: Wade caught the biggest fish he could find. “The whole success of ‘River Monsters’ was we showed ...

Related: 'True rarity': Gigantic alligator gar caught and released in Texas reservoir could break 2 world records This enormous fish is "a truly prehistoric monster," said biologist Jeremy Wade on ...

1. Amazon Titanic - Jeremy Wade looks into the sinking of the Sobral Santos ferry on the Amazon River, after which many were rumoured to have been eaten alive by a monstrous fish. More info ...

This season Jeremy Wade leaves behind his beloved rivers & heads into new territory- the open ocean. Faced with stormy seas, deep-water dives, & extreme encounters- will Jeremy & his crew survive ...