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 ...

Fisherman and adventurer, Jeremy Wade, travels to Lake Garda in northern Italy to investigate a 16th century monster fish. What secrets is the lake hiding?(S01,E04) Alaska's Lost River Kings: Episode ...

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 ...

Jeremy Wade is not a fisherman; he's an `extreme angler' in search of the biggest and most dangerous freshwater fish, the kind with a taste for human flesh. This action-adventure series also features ...

3. Malaysian Lake Monster - Jeremy Wade sets out to track down the possible killer of two men who mysteriously vanish on a remote lake in Malaysia, amid rumours of a giant fish on the loose. More info ...