River Monsters

The WORST episodes of River Monsters

Every episode of River Monsters ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of River Monsters!

Extreme angler, Jeremy Wade, is on the hunt for freshwater fish with a taste for human flesh. This rip-roaring ride through the dark side of nature mixes action and adventure with mysteries, edge of the seat chase and a battle of wills between man and almost supernatural beasts who lurk in the serpentine waterways of the planet, mooching murderously underwater, growing to truly awesome sizes. Watch as Jeremy Wade deconstructs exactly how these river monsters are constructed to kill.

Last Updated: 6/5/2022Network: Animal Planet
European Maneater
165 votes

#1 - European Maneater

Season 1 - Episode 4 - Aired 4/26/2009

Reports of an attack on a swimmer in a lake close to Berlin is the starting point for an intense and shocking investigation. Wade travels to Germany where he meets modern-day victims of a beast that has been raising its snout above the surface of fresh waters in Europe regularly over the past 700 years. Investigations travel to Spain where Wade discovers firsthand that the wels catfish is a living, breathing aggressive predator growing to man-eating proportions capable of everything depicted in medieval records and more.

Watch Now:AmazoniTunes
Amazon Flesh Eaters
174 votes

#2 - Amazon Flesh Eaters

Season 1 - Episode 6 - Aired 5/10/2009

A man swallowed whole by a fish. A body eaten alive from within. Another penetrated in a most unnatural fashion, and yet more with multiple stab wounds. Jeremy Wade is in pursuit of these notorious killers to discover the facts — to determine if their crimes are real and their methods as gruesome as reported.

Watch Now:AmazoniTunes
Alligator Gar
226 votes

#3 - Alligator Gar

Season 1 - Episode 3 - Aired 4/19/2009

In the Deep South is a river monster with the reputation of a devil. Blamed for a series of violent attacks on humans, this creature is said to be as vicious as a shark and as big as an alligator. The authorities said it should be annihilated, but not all are so quick to condemn it. Extreme angler Jeremy Wade heads to Texas on its trail in an attempt to uncover the facts behind this animal's notoriety. Helped by local expertise and with his own wits honed sharp, he finds new ways to reveal the truth about the monster alligator gar.

Watch Now:AmazoniTunes
287 votes

#4 - Piranha

Season 1 - Episode 1 - Aired 4/5/2009

In 1976 a packed coach crashed into the Amazon killing 39 people. By the time the bodies were pulled out by rescuers some had been so viciously mutilated by piranha they could only be identified by their clothes. Tracking down survivors and eyewitnesses of piranha attacks, Jeremy Wade reveals why the piranha fills our nightmares.

Watch Now:AmazoniTunes
Rift Valley Killer
114 votes

#5 - Rift Valley Killer

Season 2 - Episode 6 - Aired 5/23/2010

Jeremy Wade is on a quest to Africa's Rift Valley to explore the roots of fishing and the monsters these first fishermen faced. It's a dangerous place, filled with killer crocs, hippos and warring gangs, but at its heart is a worthy prize: the Mputa, aka Nile perch, Africa's largest freshwater fish.

Watch Now:AmazoniTunes
Death Ray
189 votes

#6 - Death Ray

Season 2 - Episode 2 - Aired 4/25/2010

Jeremy Wade heads to The Mekong River in Thailand in search of one of the world's largest, most terrifying river fish, the Giant Freshwater Stingray. Armed with a venomous 10 inch barbed tail, this 700-pound monster tests Jeremy to his physical limit.

Watch Now:AmazoniTunes
Killer Snakehead
126 votes

#7 - Killer Snakehead

Season 2 - Episode 3 - Aired 5/2/2010

Angler Jeremy Wade sets his sights on an aggressive Far Eastern predator that's now invading America's backyards. Accused of homicide, and said to breathe air and crawl on land, the Snakehead is a monster that sounds more like a gangster than a fish.

Watch Now:AmazoniTunes
Killer Catfish
193 votes

#8 - Killer Catfish

Season 1 - Episode 2 - Aired 4/12/2009

Two years ago, on the treacherous Kali River, high in the mountains of Northern India, Jeremy Wade unearthed the mother of all fisherman's tales and the ultimate freshwater horror: a super-sized freshwater fish turned man-eater. Jeremy takes on the biggest, toughest challenge he's ever faced as he heads back to the Himalayas to separate fact from fiction and track down the monstrous beast.

Watch Now:AmazoniTunes
Congo Killer
93 votes

#9 - Congo Killer

Season 2 - Episode 4 - Aired 5/9/2010

Jeremy Wade travels to one of the few rivers left on earth that will still test a fisherman. The Congo, a river steeped in legends... and soaked in violence. One spirit in particular is said to lure fishermen from their boats to their death.

Watch Now:AmazoniTunes
Amazon Assassins
205 votes

#10 - Amazon Assassins

Season 1 - Episode 5 - Aired 5/3/2009

In the darkest depths of the Amazon lurks a dinosaur. Legends tell of an evil spirit inhabiting an enormous fish. Taller than a man, it is covered in scales and crushes its prey with a tongue made of bone. Jeremy Wade has encountered this creature once before, and he came out second best. He's taking no chances in the rematch.

Watch Now:AmazoniTunes
Jungle Killer
169 votes

#11 - Jungle Killer

Season 3 - Episode 7 - Aired 5/30/2011

Jeremy Wade sets out to discover the true river monster of South America. Piranhas get all the press, but is there a more fearsome predator lurking in its rivers? Tipped off by an account of an attack on a diver, Jeremy soon discovers that there is a real monster to find. Tipped off by the the local Amerindian tribe, Jeremy heads deeper and deeper into the remote jungles of Suriname to come face to face with a jungle killer like no other.

Watch Now:Amazon
Atomic Assassin
199 votes

#12 - Atomic Assassin

Season 5 - Episode 2 - Aired 4/14/2013

Extreme angler Jeremy Wade is on the trail of a monster that leads him to the site of the worst nuclear accident in history - Chernobyl. In a nerve-shredding race against radiation and time, he searches for the perpetrator of a series of grizzly attacks.

Watch Now:Amazon
Freshwater Shark
173 votes

#13 - Freshwater Shark

Season 1 - Episode 7 - Aired 5/17/2009

No fish inspires the same terror as the shark, a creature with an insatiable hunger for brutal violence. But at least these killers are confined to the oceans. Or are they? Expert angler Jeremy Wade investigates whether it's possible for sharks to live in freshwater, and if so just how far inland these vicious predators will bring their reign of terror.

Watch Now:Amazon
Alaska's Cold Water Killer
135 votes

#14 - Alaska's Cold Water Killer

Season 7 - Episode 4 - Aired 4/26/2015

Recent reports of fishermen vanishing without a trace on Alaska's south coast leads Jeremy to America's Last Frontier on a mission that takes him on the hunt for one fish he's never hooked before -- the mighty king salmon. When the investigation takes an unexpected turn, Jeremy finds himself in shark-infested waters, observing the salmon shark! Jeremy makes himself shark bait to prove that these fish won't attack a human - even if that human is diving right into the middle of their feeding frenzy.

Watch Now:Amazon
Mekong Mutilator
102 votes

#15 - Mekong Mutilator

Season 7 - Episode 2 - Aired 4/12/2015

Jeremy is on the shores of the Mekong River in Cambodia to look for a monstrous fish that has blinded, killed and recently sliced clean through a man's testicle.

Watch Now:Amazon
Alaskan Horror
154 votes

#16 - Alaskan Horror

Season 2 - Episode 5 - Aired 5/16/2010

Extreme angler Jeremy Wade searches for the lethal lake monster of native legend that's been dragging people down to an icy grave for centuries. He ends up landing the largest fish he's ever caught, but is this the monster?

Watch Now:AmazoniTunes
Electric Executioner
195 votes

#17 - Electric Executioner

Season 3 - Episode 5 - Aired 5/15/2011

Jeremy Wade travels to Brazil's "wild west" in search of a river monster that has killed three cowboys. The search for the culprit sends him deep into prospecting cattle country, where he discovers the shocking truth about a fish he's never caught before. He has to combat all his fears to catch this monster, and after a long chase, Jeremy finally corners his elusive prey in the most unexpected place. All he has to do then is catch it without getting killed.

Watch Now:Amazon
Hidden Predator
122 votes

#18 - Hidden Predator

Season 2 - Episode 7 - Aired 5/30/2010

The biggest bull shark ever recorded was caught in South Africa, in a river. Was this monstrous freshwater catch a horrifying fluke, or are there more shark giants prowling this river? Jeremy Wade heads to South Africa to see if he can land a monster!

Watch Now:AmazoniTunes
Devil of the Deep
228 votes

#19 - Devil of the Deep

Season 8 - Episode 4 - Aired 5/26/2016

Extreme angler Jeremy Wade's cases usually involve freshwater culprits, but with multiple reports of a deep water serial killer in Mexico's Sea of Cortez, he must step out of his comfort zone and into uncharted depths in search of the red devil.

Watch Now:AmazoniTunes
Death Down Under
262 votes

#20 - Death Down Under

Season 8 - Episode 2 - Aired 4/14/2016

Jeremy travels to the scene of an ocean aircraft crash in Australia that left a group of Aboriginal elders brutally murdered almost without a trace. He embarks on one of his toughest investigations ever, taking on some of the deadliest animals on the planet in order to track down this elusive killer.

Watch Now:AmazoniTunes
Legend of Loch Ness
100 votes

#21 - Legend of Loch Ness

Season 5 - Episode 6 - Aired 5/27/2013

For more than 30 years, hardened angler Jeremy Wade has taken on the world’s most legendary river monsters bar one - the Loch Ness Monster. It’s a challenge he’s been reluctant to take on … until now. But can the freshwater detective succeed where so many have failed and uncover the true identity of the creature behind the myth? On an epic mission to track down the world’s most famous cryptid, he travels from the depths of Loch Ness to the volcanoes of Iceland and beyond. But will his Nordic Odyssey really uncover the mother of all monsters, the legend of legends?

Watch Now:Amazon
South Pacific Terrors
111 votes

#22 - South Pacific Terrors

Season 7 - Episode 5 - Aired 5/10/2015

Jeremy goes to Fiji to investigate reports of people being attacked underwater and tries to find out if there are multiple culprits or if a single perpetrator is to blame.

Watch Now:Amazon
Mongolian Mauler
118 votes

#23 - Mongolian Mauler

Season 4 - Episode 6 - Aired 5/13/2012

In Mongolia, Jeremy Wade hopes to reel in a rare river monster that's become legendary. Pound for pound, this man-sized monster is said to be one of the world's strongest fighters. Could the rivers here still be home to a beast that many have heard about but few have seen? While Wade is on the hunt, he may be hunted himself as armed outlaws lurk in the wilderness surrounding the remote river.

Watch Now:Amazon
Africa's Deadliest
113 votes

#24 - Africa's Deadliest

Season 7 - Episode 6 - Aired 5/17/2015

Jeremy Wade returns to Africa's Okavango Delta to investigate a pack-hunting carnivore blamed for mauling the victims of a capsized boat. This time, Jeremy decides to put on his dive gear and offer himself as live bait in croc-infested waters.

Watch Now:Amazon
Demon Fish
227 votes

#25 - Demon Fish

Season 2 - Episode 1 - Aired 5/31/2010

Jeremy Wade journeys to the infamous Congo River in Africa in search of the world's most ferocious fish. This supernatural monster predator pushes Jeremy to his physical and mental limit. It requires all of his skills and the help of a witch doctor.

Watch Now:AmazoniTunes

Want to see the rest of the rankings?

Episode Ninja is a small business run by one person.
Pro memberships help fund servers and new feature development!