Researcher Zeb Hogan travels to Cambodia to find and study the little-known giant stingray.

Follow Dr. Zeb Hogan on his journey to find the largest freshwater fish in Australia: the freshwater...

Follow Zeb Hogan as he goes in search of the biggest and oldest of North America's river monsters: t...

Follow Dr Zeb Hogan on his quest to find what could be the world's largest and most deadly freshwate...

Aquatic ecologist Dr. Zeb Hogan teams up with kayaking experts to discover what monster fish are lur...

They are carp from Asia which can jump 10 feet in the air at the sound of a boat motor, turning a da...

Dr Zeb Hogan travels to the American Midwest in search of the paddlefish, one of the largest, oldest...

Giant freshwater fish are studied at Khone Falls on the Mekong River in Laos.

Zeb Hogan travels to Spain in search of the invasive Wels catfish -- a monster fish capable of growi...

Flying fish from Asia are invading America's waterways and turning innocent boating trips into boxin...

Dr Zeb Hogan searches the southern United States for the rapidly disappearing alligator gar.

Zeb travels Thailand in search of giant fish; freshwater protected areas.

Zeb Hogan is on a mission to find the giants of the sea.

Zeb travels to Spain for the wels catfish, a vicious predator that destroys local ecosystems.

Zeb Hogan attempts to fathom the uncontrolled spread of flying Asian carp in America's waterways.

Amazonian expedition to assess the impact of humanity on the area's fish population.

Zeb faces the crocodiles and goes in search of Africa's biggest freshwater fish: the Nile perch.

Aquatic ecologist Dr Zeb Hogan goes in search of the paddlefish.

Aquatic ecologist Zeb Hogan and fellow scientists search for Nile perch.

Each year in the Australian outback, the dry season leaves five top predators- giant stingrays, sawf...

The giant eel is a massive, flesh-eating, wall-climbing, air-absorbing, snakelike fish that can atta...

The Murray cod can grow up to 6 feet long and weigh more than 250 pounds, and is rumored to eat ever...

Kamchatka, Russia, is one of the wildest and most remote locations on earth and is home to the large...

A mammoth catfish that has allegedly stalked, attacked and killed people can be found in the Indian...

One of the oldest and most bizarre-looking freshwater fish on the planet can be found in the America...

Dr. Zeb Hogan travels to one of the world's largest waterfalls in Laos, where each year millions of...

Lured by stories of catfish the size of Volkswagens, Zeb Hogan is on a mission to find out if the le...

Armies of salmon surge through Alaska's icy waters during mating season, but only one catches the ey...

The Pacific Northwest is known for things that are BIG giant redwoods, sweeping coastlines and massi...

Zeb Hogan is on the hunt for a goldfish the size of a cow! Giant carp can grow up to weigh 600 pound...

It's a voracious predatory catfish that prowls the rivers of Southeast Asia.

Zeb is on a quest to catch a river shark to determine the truth behind their deadly reputation.

Thailand's giant stingrays and the whip rays of Australia can grow up to 16 feet and 1,300 lbs.

Wolf fish, known locally as haimara, can reach a metre in length and is said to hunt humans.

There's a freshwater fish with a shock five times more powerful than a US wall socket.

The Thai snakehead is said to be able to move on land, and has apparently spread to US waters.

In Nicaragua, Zeb faces his most difficult battle hunting for one of the biggest monsters.

Some shark species can survive in freshwater as well as salt.

Fish biologist Zeb Hogan is searching for one of the freakiest fish in the world. Vampire fish, know...

Join Zeb Hogan as he explores the maze-like river systems of Argentina on a quest to catch a colossa...

Join Zeb Hogan as he heads to southern France to try to catch a mammoth-sized 650 lb. Wels catfish a...

Zeb explores Florida's deep-water reefs on a mission to catch a seven-foot goliath grouper.

Zeb Hogan searches for a 400-pound short-tailed river ray in South America.

Zeb Hogan returns to Thailand to find the biggest monster fish on Earth.

Some adaptations can yield freakish results due to all of the unique environments of the oceans.

Zeb heads to the ancient French town of Albi in search of the wels catfish.

Zeb Hogan embarks on a six-continent journey as he seeks out the world's biggest and rarest fish.

Zeb Hogan searches for a ferocious fish with fangs and a ray with a hidden weapon.

The Salween River Basin has an extreme diversity of animals, and is home to some 50 fish species fou...

Zeb teams up with renowned shark scientist, Dr. Tristan Guttridge, who has been conducting research...