17 Ugliest Fish in the World – Pics, Videos, Interesting Facts

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Facts about the Ugliest Fish in the World

Ever since I was a child, I’ve been fascinated by the vastness and mystery of our oceans. From the awe-inspiring blue whale to the minuscule pygmy goby, the sea is teeming with life in all its splendid forms.

But let’s be honest, not every fish is going to win a beauty contest. In fact, some of them might just win the title for the world’s ugliest!

In this blog post, I’m diving deep (pun intended) into the world of the not-so-pretty fish. I’ve rounded up 17 of the most peculiar, bizarre, and yes, downright ugly fish that our oceans have to offer.

Each of these fish, regardless of their looks, has a unique story and a role in the marine ecosystem. So, grab a cup of tea, get comfy, and join me on this underwater journey.

Whether you’re here for a chuckle or to satisfy your curiosity, I promise you’re in for a treat.

17. Sculpin

Sculpin fish

Sculpins, often considered the ugliest fish in Canada, are a diverse group of fish found primarily in cold water regions.

These fish, abundant in Nova Scotia, are characterized by their spiny exteriors, which can make them a challenge for anglers to handle.

Their unique body structure, covered in spines, serves as a defense mechanism against predators.

Interesting Fact

Unlike most fish species, sculpins lack a swim bladder, the organ responsible for maintaining buoyancy. Instead, they utilize their broad pectoral fins to glide gracefully through the water, often staying close to the bottom.

16. Frilled Shark

Frilled Shark

The frilled shark, with its serpentine body and unique gill slits, is one of the most ancient species of sharks still in existence.

Its eel-like appearance, combined with its deep-sea habitat, has made it a subject of intrigue and study.

Its elongated body allows it to swiftly move through the water, capturing prey with a sudden lunge.

Interesting Fact

The frilled shark’s mouth is lined with approximately 300 trident-shaped teeth, spread across 25 rows. This impressive dental arrangement ensures that any prey caught in its jaws has little chance of escape.

15. Red-lipped Batfish

Red-lipped Batfish

Native to the waters surrounding the Galapagos Islands, the red-lipped batfish is a peculiar sight. With its bright red lips and unique body structure, it appears more suited for a walk in the park than a swim in the ocean.

This bottom-dwelling fish has evolved to “walk” on the ocean floor using its modified pectoral fins.

Interesting Fact

The red-lipped batfish has a specialized dorsal fin known as an illicium. This fin acts as a lure, attracting curious prey close enough for the batfish to snatch.

14. Spotted Handfish

Spotted Handfish

The spotted handfish, native to the waters of Australia, is a rare and endangered species. Its name derives from its hand-like fins, which it uses to “walk” along the ocean floor.

With a face that seems to be perpetually frowning and a body adorned with spots, it’s a sight to behold.

Interesting Fact

Conservation efforts are underway to protect the spotted handfish. One of the primary threats to its survival is the Northern Pacific seastar, an invasive species that feeds on the handfish’s eggs.

To combat this, divers often manually remove seastars from handfish breeding areas.

13. Sunfish

The sunfish, or mola mola, is a true giant of the ocean. With a flat, round body and rough, textured skin, it’s often mistaken for a large floating disc when seen from the surface.

These gentle giants are known to bask in the sun near the ocean’s surface, which is how they got their name.

Interesting Fact

The sunfish’s reproductive capabilities are staggering. A single female sunfish can produce up to 300 million eggs at once, more than any other known vertebrate. These eggs are released into the water, where they float freely, waiting to be fertilized.

12. Goblin Shark

Goblin Shark

The goblin shark, with its prehistoric appearance, is one of the most distinct species of deep-sea sharks. Their elongated, flattened snouts are equipped with sensory organs that detect the electric fields produced by other fish, aiding them in locating prey in the deep, dark ocean.

Their jaws, which can protrude dramatically, are lined with sharp, nail-like teeth perfect for catching slippery prey.

Interesting Fact

The goblin shark’s ability to rapidly extend its jaw is due to a unique set of ligaments. When capturing prey, these ligaments release, allowing the jaw to shoot forward up to 3 inches, snapping up anything in its path.

11. Sea Pig

Sea Pig

Sea pigs are a type of sea cucumber found in deep-sea environments. Unlike their terrestrial namesake, sea pigs are small, soft-bodied creatures that move using tube-like feet.Their pink, translucent bodies give them a ghostly appearance, and they play a crucial role in the deep-sea ecosystem by consuming detritus.

Interesting Fact

Sea pigs have fascinating social behavior. They often congregate in large groups on the ocean floor, sometimes numbering in the hundreds.

This behavior is believed to be a survival strategy, where the presence of many individuals increases the chances of detritus falling in their vicinity.

10. Wolffish


The wolffish, with its fierce appearance and powerful jaws, is a force to be reckoned with in the cold waters of the Atlantic and Pacific oceans. Their strong teeth, which can crush shells and hard crustaceans, are a testament to their predatory nature.

Despite their menacing look, wolffish are not considered a threat to humans.

Interesting Fact

To survive in the frigid waters of their habitat, wolffish have evolved a unique adaptation. They produce a natural antifreeze protein that prevents their blood from freezing, allowing them to thrive in cold environments.

9. Frogfish


Frogfish are a type of anglerfish known for their incredible camouflage abilities. Their warty, uneven skin and unique colors allow them to blend seamlessly with their surroundings, making them nearly invisible to both prey and predators.

They are ambush predators, lying in wait for unsuspecting prey to come close.

Interesting Fact

The frogfish’s hunting technique is truly remarkable. They can expand their mouths to swallow prey up to twice their size, allowing them to feast on a wide variety of marine creatures.

8. Monkfish


Monkfish, often referred to as the “poor man’s lobster” due to their similarity in taste, are a delicacy in many cuisines. They are bottom-dwelling fish with large heads and mouths, equipped with sharp teeth. Their mottled skin and fringed appearance allow them to blend with the sandy or muddy ocean floor.

Interesting Fact

The monkfish has a modified dorsal spine that acts as a lure. This “fishing rod” has a fleshy tip that the monkfish can wiggle to mimic a worm or small fish, attracting prey right into its mouth.

7. Viperfish


The viperfish, with its slender body and needle-like teeth, is one of the most iconic deep-sea creatures.

Their large eyes are adapted to detect the faintest glimmers of light in the abyss.

The long, sharp teeth of the viperfish are so big; that they don’t fit inside its mouth and instead curve back towards its eyes.

Interesting Fact

Viperfish have several bioluminescent photophores on their bodies. These light-producing organs are strategically placed to attract prey.

By flashing these lights in the pitch-black depths of the ocean, the viperfish lures curious prey close enough to be snatched up in its formidable jaws.

6. Blobfish


The blobfish, native to the deep waters surrounding Australia and New Zealand, has gained internet fame due to its unusual, almost human-like face when brought to the surface. This deep-sea dweller lives at depths where the pressure is several times higher than at sea level.

Its soft, gelatinous body allows it to survive in these extreme conditions.

Interesting Fact

The blobfish’s unique, gelatinous structure is perfectly adapted to its environment.

At great depths, the blobfish’s body is actually quite normal, but when brought to the surface, the difference in pressure causes it to expand and take on its distinctive “blobby” appearance.

5. Toadfish

Toadfish, found in various marine environments, are named for their toad-like appearance. With a broad, flattened head and a wide mouth, these fish are often found hiding in the sand or mud, waiting to ambush their prey.

Interesting Fact

Toadfish are among the few fish species that can produce sound. They have specialized swim bladders that function as resonating chambers, allowing them to produce a variety of vocalizations. These “songs” are primarily used during mating rituals.

4. Vampire Fish

Vampire Fish

The vampire fish, or payara, is a predatory fish native to the Amazon Basin. With a streamlined body and large, sharp fangs, this fish is a formidable predator in its environment.

Interesting Fact

The vampire fish’s two long fangs are so large that they have slots in their upper jaw to accommodate them when the mouth is closed. These fangs are used to impale smaller fish, making them an effective predator in their freshwater habitat.

3. Deep Sea Anglerfish

Deep-sea anglerfish are one of the most iconic creatures of the abyss. With their bioluminescent lure, they attract prey in the pitch-black depths of the ocean. Their large mouths and sharp teeth allow them to consume prey larger than themselves.

Interesting Fact

The deep-sea anglerfish’s reproductive method is truly unique. The much smaller male anglerfish attaches itself to a female, eventually fusing with her body.

Over time, the male becomes a simple sperm-producing appendage, relying on the female for sustenance.

2. Whitemargin Stargazer

Whitemargin Stargazer

The Whitemargin Stargazer, found in the Indo-Pacific region, is a bottom-dwelling fish known for its upward-facing eyes and mouth. Their unique appearance, combined with their ability to deliver venomous and electric shocks, makes them a fascinating species.[/su_note]

Interesting Fact

Whitemargin Stargazers have a unique hunting technique. They bury themselves in the sand, leaving only their eyes and mouths exposed.

When an unsuspecting prey swims by, they leap out of the sand to capture it.

1. Blob Sculpin

Blob Sculpin

The blob sculpin, found in the deep waters of the North Pacific, has a soft, gelatinous body that gives it its name. Despite its somewhat comical appearance, the blob sculpin plays a crucial role in its ecosystem.

Interesting Fact

Blob sculpins exhibit a high level of parental care. The male guards the nest, ensuring the safety of the eggs.

Once the eggs hatch, the young sculpins are left to fend for themselves in the vast expanse of the deep sea.


Why are these fish considered ugly?

The reasons why these fish are considered ugly vary. Some of them have unusual or deformed features, while others have a slimy or gelatinous appearance.

Still others have sharp teeth or a menacing appearance.

Where do these fish live?
Most of these fish live in the deep sea, where the pressure and darkness make it difficult for other fish to survive. This allows them to thrive in their environment, even though they may not be the most attractive creatures.

What do these fish eat?
The diet of these fish varies depending on the species. Some of them are predators that eat other fish or invertebrates, while others are filter feeders that eat plankton or other small organisms.

Are these fish dangerous to humans?
Some of these fish, such as the anglerfish and the stargazer, have venomous spines that can inflict a painful sting. However, most of these fish are not considered to be dangerous to humans.

Are these fish endangered?
The conservation status of these fish varies. Some of them are relatively common, while others are more rare. The goblin shark, for example, is considered to be a vulnerable species.

Final Words

During my many underwater adventures, I've been privileged to witness the breathtaking spectrum of marine life. From ethereal jellyfish to vibrant clownfish, the ocean's treasures are endless. Yet, it's the 17 unconventional fish I've highlighted in this post that have truly captured my imagination.

While they might not grace the covers of marine magazines, I've come to see their beauty in their uniqueness. Every bump, spine, and odd shape tells a story of survival and adaptation.

So, the next time you stumble upon one of these unsung wonders, pause and marvel. They're a testament to the ocean's rich tapestry and the delicate balance we must cherish and protect.

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