By Sheetal Kumari | September 5, 2025

10 Most Aggressive and Deadly Fish Living in the Deep Ocean

Viperfish

With dagger-like teeth and a hinged jaw, the viperfish uses bioluminescence to lure and ambush prey in the ocean’s dark depths.

Image: MBARI

Dragonfish

This predator glows in near-infrared, invisible to most animals, allowing it to stalk prey silently before striking with a powerful bite.

Image: MBARI

Fangtooth Fish

Despite its size, this deep-sea hunter has the largest teeth relative to body length, enabling it to bite prey powerfully in complete darkness.

Image: MBARI

Goblin Shark

With dagger-like teeth and a hinged jaw, the viperfish uses bioluminescence to lure and ambush prey in the ocean’s dark depths.

Image: Smithsonian Ocean

Frilled Shark

The frilled shark, with its snake-like body and backward-facing teeth, engulfs prey whole, striking suddenly with a powerful, lunging attack.

Image: Canva

Pacific Blackdragon

This fierce female predator uses a glowing barbel to lure prey and can swallow fish nearly as large as its own body.

Image: MBARI

Cookiecutter Shark

Tiny yet lethal, this predator latches onto prey and twists, carving circular wounds that cut deep into flesh and skin.

Image: MarineBio Conservation Society/@insectbeau/X

Anglerfish

Its glowing lure draws prey close, then powerful jaws clamp shut, trapping victims with no chance of escape in the deep-sea darkness.

Image: MBARI

Atlantic Wolffish

With crushing jaws and massive teeth, this fierce bottom-dweller smashes shells and crustaceans in the cold, unforgiving depths of the deep sea.

Image: montereybayaquarium

Giant Trevally

Though not as deep-dwelling, this fierce ocean predator ambushes prey with speed and is even known to leap from the water to snatch birds mid-flight.

Image: MBARI

Next: Meet the Kagu: The World’s Only Ghostly Grey Bird
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