Hogan investigates flying fish from Asia that are invading America's waterways, and he searches for one of the most- monster fish. Some of the species Hogan encounters have survived but now face the threat of extinction.
Dr. Zeb Hogan and Trip Jennings, a National Geographic Young Explorer, travel to Khone Falls in Laos in search of the fish superhighway.
Dr. Zeb Hogan goes Down Under to the Murray-Darling Basin in pursuit of an ancient apex predator, the Murray Cod.
Follow Dr. Zeb Hogan as he travels to North Africa in search of the Nile Perch, the largest freshwater fish in Africa.
Meet close to the oldest river behemoth of North America: the white sturgeon.
Zeb Hogan returns to the Australian Outback and comes between five giant predators battling to survive the harsh climate of the Northern Territory.
Zeb goes Down Under to find the deadliest Aussie assassin. From sawfish to river sharks, Australia is no place for the weak. Who will come out on top?
Take a tour around the world as Zeb is counting down his top ten biggest, toughest and most astonishing catches of all time.
Prepare to get weird with some seriously strange monster fish as Zeb is on a mission to find some of the world's most bizarre freshwater beasts.
On a six-continent journey around the globe, Zeb encounters the fascinating fish species that call some of the world's strangest corners home.
Zeb Hogan is on a mission to find and protect the Hucho Taimen, the world's largest freshwater fish found in the frigid rivers of Mongolia.
Join Zeb Hogan as he looks for the largest freshwater fish in Australia - the freshwater sawfish.
Beneath the surface of central Thailand's rivers swim giant freshwater stingrays, and Zeb has a chance to dive with one for the very first time.
Zeb goes in search of one of North America's river monsters, the giant white sturgeon, many of which have a lifespan of almost a century.
Dr. Zeb Hogan travels to Spain in search of the invasive Wels Catfish, a monster fish capable of growing over 8-feet long.
Dr. Zeb Hogan is on an adventure to uncover the mysteries of the forgotten Rio Roosevelt River, one of the last pristine rivers in the Amazon.
Dr. Zeb Hogan faces swarms of Big-Head and Silver Carp in the Mississippi River. He investigates why these fish are spreading and how to stop them.
Dr. Zeb Hogan is in Thailand to investigate why so many mega fish are found here, and if anything needs to be done to help protect the native species.
Dr. Zeb Hogan hunts in the bayous of Louisiana for the Alligator Gar, an ancient predator that is being pushed to the brink.
Dr. Zeb Hogan searches for the big, bizarre and prehistoric Mississippi Paddlefish in the scenic Mid-Western United States.
Dr. Zeb Hogan is on a mission on the Kali River in the Indian Himalayas to investigate reports of a mammoth-sized catfish called a Goonch.
Dr. Zeb Hogan travels to the wild and remote Kamchatka in Russia's Far East, home to one of Earth's last truly wild Salmon sanctuaries.
Dr. Zeb Hogan travels across Oceania in the remote South Pacific, tracking the New Zealand Longfin Eel and its cousin, the Mottled Eel.
Zeb Hogan travels to Thailand where he catches a giant carp of the size of a cow and has a competition to see who can catch the biggest fish.
Zeb Hogan is in Florida, on the bank of the Indian River, investigating stories he has heard about the man-eating river shark living in waterways.
Zeb Hogan travels to the jungles of Malaysia looking for the fearsome, voracious wallago catfish, who are rumored to swallow animals in the woods.
Zeb is after the green sturgeon, a fish that grow up to seven feet long, live up to 70 years, and has been around since the days of the dinosaurs.
Zeb heads down to the South in search of the truth about the legendary giant catfish - rumor has it they are big enough to swallow a human whole.
Zeb Hogan heads to Alaska, and braves rugged wilderness and hungry bears in quest of the legendary giant king salmon - 'Salmonzilla'.
Biologist Zeb Hogan travels to Australia to try and track down two of the country's most dangerous river shark species.
Zeb Hogan hunts for the fresh water Whipray in northern Australia, then heads to Thailand on the trail of a giant Stingray.
Zeb heads deep into the Brazilian Amazon in search of an Electric eel large enough to kill a Caiman crocodile.
Zeb is in Guyana, South America in search of a fish with a terrifying reputation, the Wolf fish.
In search of one of the freakiest fish in the world, Zeb heads into the heart of Guyana, South America to catch the locally known 'vampire fish'.
Zeb journeys to Argentina in quest of the short-tailed river ray, which has a surprise hidden in its tail and isn't going to show it without a fight.
Zeb is in Albi in southern France, hoping to search for the giant wels catfish and to see what they eat to grow to its monstrous size.
Equipped with the latest scientific knowledge and marine technology, Zeb hooks a colossal goliath grouper that is going to test his physical strength.
Zeb encounters ancient white sturgeon, enormous alligator gar and more freshwater giants on his tour across the US in search of the American monsters.
Teaming up with experts and applying local techniques, Zeb travels across Thailand to hunt down the biggest and baddest monster fish on the planet.