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River Monsters poster

River Monsters (2009)

Adventure · Documentary · Mystery

Extreme angler Jeremy Wade is on the hunt for fish with a taste for human flesh. This rip-roaring ride mixes action and adventure with mysteries, edge-of-the-seat chase and a battle of wills between man and nature.

IMDb rating
8.2 (6,539 votes)
Seasons
9
Streaming (US)
HBO Max · Discovery+ Amazon Channel · YouTube TV · Philo · Animal Planet · Discovery + · Tubi TV · Spectrum On Demand
Language
EN
Type
TV series
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Ratings refreshed Aug 19, 2026 · 9 seasons indexed

Cast

Seasons

Season 1 (2009)

8.16 avg 7 episodes 8.1 → 7.9 43 min avg

Ep 1: 8.1 · 152 votesEp 2: 8.5 · 115 votesEp 3: 7.7 · 131 votesEp 4: 8.1 · 120 votesEp 5: 8.4 · 112 votesEp 6: 8.4 · 105 votesEp 7: 7.9 · 103 votes
Season 1 episodes - IMDb ratings
#TitleRatingVotes
1Piranha8.1152
2Killer Catfish8.5115
3Alligator Gar7.7131
4European Maneater8.1120
5Amazon Assassins8.4112
6Amazon Flesh Eaters8.4105
7Freshwater Shark7.9103

Season 2 (2010)

8.43 avg 8 episodes 8.5 → 8.9 43 min avg

Ep 1: 8.5 · 128 votesEp 2: 8.7 · 108 votesEp 3: 8.0 · 100 votesEp 4: 8.0 · 97 votesEp 5: 8.5 · 93 votesEp 6: 8.2 · 96 votesEp 7: 8.6 · 90 votesEp 8: 8.9 · 36 votes
Season 2 episodes - IMDb ratings
#TitleRatingVotes
1Demon Fish8.5128
2Death Ray8.7108
3Killer Snakehead8.0100
4Congo Killer8.097
5Alaskan Horror8.593
6Rift Valley Killers8.296
7Hidden Predator8.690
8Special: Killer Catfish (Extended Cut)8.936

Season 3 (2011)

8.33 avg 12 episodes 7.9 → 8.8 43 min avg

Ep 1: 7.9 · 92 votesEp 2: 8.3 · 81 votesEp 3: 8.2 · 75 votesEp 4: 8.4 · 81 votesEp 5: 8.3 · 79 votesEp 6: 8.4 · 82 votesEp 7: 8.3 · 79 votesEp 8: 7.8 · 32 votesEp 9: 8.5 · 31 votesEp 10: 8.7 · 34 votesEp 11: 8.3 · 30 votesEp 12: 8.8 · 41 votes
Season 3 episodes - IMDb ratings
#TitleRatingVotes
1The Mutilator7.992
2Flesh Ripper8.381
3Silent Assassin8.275
4Chainsaw Predator8.481
5Electric Executioner8.379
6Cold-Blooded Horror8.482
7Jungle Killer8.379
8Special: The Deadliest7.832
9Special: The Most Bizarre8.531
10Special: The Lost Reels - Amazonian Giant8.734
11Special: The Lost Reels - Himalayan Giant8.330
12Special: River Monsters Goes Tribal8.841

Season 4 (2012)

8.46 avg 14 episodes 8.2 → 8.2 50 min avg

Ep 1: 8.2 · 73 votesEp 2: 8.6 · 76 votesEp 3: 8.1 · 67 votesEp 4: 8.1 · 65 votesEp 5: 8.8 · 38 votesEp 6: 8.3 · 68 votesEp 7: 8.6 · 65 votesEp 8: 8.6 · 58 votesEp 9: 9.3 · 82 votesEp 10: 8.6 · 30 votesEp 11: 7.9 · 32 votesEp 12: 8.7 · 35 votesEp 13: 8.5 · 25 votesEp 14: 8.2 · 34 votes
Season 4 episodes - IMDb ratings
#TitleRatingVotes
1American Killers8.273
2Pack of Teeth8.676
3Invisible Executioner8.167
4Asian Slayer8.165
5Killer Sharks and Rays8.838
6Russian Killer8.368
7Mongolian Mauler8.665
8Phantom Assassin8.658
9Lair of Giants9.382
10Special: Killer Weapons8.630
11Special: Lethal Legends7.932
12Special: Deadliest Encounters8.735
13Special: Deadliest Catfish8.525
14Special: Untold Stories8.234

Season 5 (2010)

8.34 avg 7 episodes 8.5 → 7.4 59 min avg

Ep 1: 8.5 · 58 votesEp 2: 8.4 · 67 votesEp 3: 8.8 · 62 votesEp 4: 8.8 · 56 votesEp 5: 8.0 · 70 votesEp 6: 8.5 · 87 votesEp 7: 7.4 · 11 votes
Season 5 episodes - IMDb ratings
#TitleRatingVotes
1Face Ripper8.558
2Atomic Assassin8.467
3Killer Torpedo8.862
4Colombian Slasher8.856
5Vampires of the Deep8.070
6Legend of Loch Ness8.587
7Special: "Year of Beasts"7.411

Season 6 (2014)

8.62 avg 11 episodes 8.6 → 9.0 44 min avg

Ep 1: 8.6 · 61 votesEp 2: 8.5 · 53 votesEp 3: 8.5 · 62 votesEp 4: 8.8 · 59 votesEp 5: 8.7 · 56 votesEp 6: 8.5 · 56 votesEp 7: 8.5 · 26 votesEp 8: 8.4 · 25 votesEp 9: 8.6 · 28 votesEp 10: 8.7 · 27 votesEp 11: 9.0 · 24 votes
Season 6 episodes - IMDb ratings
#TitleRatingVotes
1Amazon Titanic8.661
2Jungle Terminator8.553
3River of Blood8.562
4Man-Eating Monster8.859
5Bone Crusher8.756
6Body Snatcher8.556
7Special: Monster Hunting Secrets8.526
8Special: American Horrors8.425
9Special: Killer Mysteries8.628
10Special: Lethal Encounters8.727
11Special: Worst Nightmares9.024

Season 7 (2015)

8.65 avg 11 episodes 8.9 → 8.5 44 min avg

Ep 1: 8.9 · 55 votesEp 2: 8.7 · 48 votesEp 3: 8.5 · 44 votesEp 4: 8.5 · 57 votesEp 5: 8.3 · 53 votesEp 6: 8.5 · 54 votesEp 7: 8.8 · 36 votesEp 8: 8.6 · 24 votesEp 9: 8.9 · 23 votesEp 10: 8.9 · 22 votesEp 11: 8.5 · 22 votes
Season 7 episodes - IMDb ratings
#TitleRatingVotes
1Canadian Horror8.955
2Mekong Mutilator8.748
3Jurassic-Sized Prehistoric Terror8.544
4Alaska's Cold Water Killer8.557
5South Pacific Terrors8.353
6Africa's Deadliest8.554
7Prehistoric Terror8.836
8Special: Flashback to the First8.624
9Special: Jeremy's Favorite Moments 18.923
10Special: Jeremy's Favorite Moments 28.922
11Special: Size Matters8.522

Season 8 (2016)

8.45 avg 13 episodes 8.5 → 7.8 41 min avg

Ep 0: 8.5 · 26 votesEp 1: 8.9 · 61 votesEp 2: 8.8 · 61 votesEp 3: 8.7 · 51 votesEp 4: 8.5 · 53 votesEp 5: 8.8 · 47 votesEp 6: 8.8 · 29 votesEp 7: 8.8 · 39 votesEp 8: 7.3 · 36 votesEp 9: 8.0 · 25 votesEp 10: 8.8 · 28 votesEp 11: 8.1 · 26 votesEp 12: 7.8 · 24 votes
Season 8 episodes - IMDb ratings
#TitleRatingVotes
0Season 8 Sneak Peek8.526
1Deep Sea Demon8.961
2Death Down Under8.861
3Razorhead8.751
4Devil of the Deep8.553
5Terror in Paradise8.847
6Special: Into the Ocean8.829
7Special: Secrets at Sea8.839
8Special: Invisible Killers7.336
9Special: Deadly Superstitions8.025
10Special: Blood River8.828
11Special: Killer Discoveries8.126
12Special: Aftershow7.824

Season 9 (2017)

8.23 avg 6 episodes 8.1 → 9.0 51 min avg

Ep 1: 8.1 · 44 votesEp 2: 8.1 · 38 votesEp 3: 8.3 · 48 votesEp 4: 7.5 · 44 votesEp 5: 8.4 · 46 votesEp 6: 9.0 · 42 votes
Season 9 episodes - IMDb ratings
#TitleRatingVotes
1Coral Reef Killer8.144
2Volcanic Island Terror8.138
3Ice Cold Killer8.348
4Return of the Killer Catfish7.544
5Malaysian Lake Monster8.446
6Special: Killer from the Abyss9.042
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Episode ratings and vote counts from IMDb. Poster, overview, and streaming data from TMDB. Data refreshed 2026-08-19.

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