Mutant Fish Taking Over Waters Around the World

Behind running, fishing is the most popular outdoor activity for adults aged 25+. It’s largely a totally innocent, wacky-event-free venture, even being described as “relaxing” or “fun”. But, all around the world, bizarre fish are being reeled in, and it’s doubtful that their captors would describe their catches as “normal”, or “relaxing”. Here are 10 Bizarre Fish Taking Over Waters Around the World.

10. Cyclops Shark

A bizarre fish was discovered in La Paz, Mexico in the Sea of Cortez. A pregnant bull shark was caught, and its fetuses removed. One of them was an albino with one eye.

©Pisces Sportfishing

Pictures of the cyclops shark were posted online, and some experts thought it was a hoax. Filipe Galvan, a well-respected Mexican scientist, inspected the shark and wrote a paper about it, which is under review. Lending further merit to the authenticity of the incident, Tracy Ehrenberg, the general manager of Pisces Sportfishing, conducted an interview with the fisherman who made the discovery. The man said that the pregnant shark was dead when they pulled it up and that during the process of filleting the shark, they found ten fetuses.


The other nine fetuses were fairly normal, both in color and the number of eyes. And, although it’s sad to think that someone still fishes for sharks, even though many species are endangered, and that they caught a pregnant one, this little albino cyclops shark is almost cute enough to star in his own Disney adventures.

9. Mutated Two-Headed Dolphin

A two-headed, mutant dolphin washed up on the shore of Ismire on the west coast of Turkey.


It’s believed to have only been around a year old when it died, as it was only a meter long. It was discovered by a schoolteacher, who watched in horror as the mutant dolphin washed up on the shore. He then called the police, who took the dolphin’s body away for testing. Preliminary eyewitness reports said that the eyes and blowhole on one of the heads weren’t open, which may mean that there were further deformations in the creature, other than the glaringly obvious one, which could have contributed to its death. No one knows whether this is a rare case of conjoined twins, a natural type of deformation, or deformation caused by contaminants.

Another incident of a two-headed dolphin-like creature was reported in the Netherlands.

©Henk Tanis

They reported the first-ever case of conjoined harbor porpoises. It was thrown back into the ocean because the fishermen thought it might be illegal to have it in their possession and generally thought it was a good idea not to risk it. They did take pictures before throwing it back, however. There are a lot of things that indicate that the creature died shortly after birth. It’s tail had not stiffened, which is something that porpoises need in order to swim, its dorsal fin had not become vertical yet, and it still had hairs on its upper lip, which porpoises shed after birth.

©Erwin Kompanje

Conjoined twins are rare, even in humans. But they’re even rarer in cetaceans, a group of animals that include porpoises, dolphins, whales, and other similar creatures. In fact, the porpoise was only the 10th conjoined cetacean case at the time of this writing.

Many people have a soft spot for dolphins and porpoises, so the thought of having two times the fun of a dolphin-like creature in one animal is exciting. It’s very unfortunate that this story turned out the way it did, instead of resulting in one of the coolest animals ever.

8. Pug-Nosed Striped Bass


This mutation is fairly common in striped bass. They’re called “pug-nosed” because the mutation causes them to have a large, lumpy head. One recent incident involves one being caught in Maryland. The mutation doesn’t affect whether you can eat it or not and doesn’t have any harmful effects on the fish, other than making it look really weird.

7. Fish with Horns

A fisherman in Siberia was stunned when he reeled in two pikes that had horns on the tops of their heads.


He referred to them as “underwater dragons” because of their appearance. The fish, which were identified as pike, had been pulled from the River Irtysh in Russia. Locals blamed nuclear debris from Russian missile launch experiments for the mutations. The fisherman dried and preserved the fishs’ heads and keeps them in his garage, which is probably a good thing because the last thing we need is horned, nuclear dragon fish roaming about.

6. Mutant Fish in Russia

A gigantic fish had been terrorizing locals in Siberia for months before it was finally caught. It had been attacking and trying to bite anyone who came near it.


With a giant head, piranha-like teeth, and a broad tail that resembled an oar, it’s not surprising that the locals were freaked out. However, It didn’t turn out to be a mutant. Experts say it was a wolffish, a type of endangered bottom-feeding predator.

©J. K. H. Friedgé

But, with the number of attacks, its appearance, and just the fact that a giant, massively aggressive fish was attacking anything that came near the water, it’s really no surprise that locals thought that this was either some sort of mutant or monster fish.

5. Giant Fluorescent Blue Fish

Residents in Gaston County, North Carolina are trying to figure out what this huge fish is and where the video was taken.

©Disclose Screen

It was uploaded on Disclose Screen’s YouTube channel and simply said that the fish was from a lake in Gaston County, but not which one. The fish appears to be around four feet long and Disclose says it’s around 30 lbs. Many are speculating that it’s some sort of carp, but they have no explanation for its fluorescent blue coloration. About 1 in a million times a rainbow trout will be blue to due to a rare genetic variant, but that occurs in approximately 1 in a million cases. If this is what the fishermen saw here, they stumbled across an extremely rare creature. Still, its a pretty large fish, and although its coloration makes it appear to be some sort of wild Pokémon that’s appeared in the lake, it’s most likely not. So, don’t go wasting balls on it.

4. Russian Fish with Two Mouths


This fish is simply terrifying! It has one mouth on its face, one on its neck and a bizarre tail. It has a weirdly round body that shouldn’t belong to a fish. But even more creepy is the fact that it has an odd, bulbous protrusion that appears to be filled with some sort of liquid. The fisherman who caught it speculated that the liquid could be eggs, meaning that there was the possibility of more of these creatures.

This isn’t the first fish of its kind to be caught. A Reddit user posted a video that appeared to show a two-headed fish.


For a bit, speculation was all over the internet about what it was and how it had come to be. It wasn’t a conjoined twin, and it hadn’t grown up near a nuclear plant, as neat as that would be. Experts said it was a grass carp that had been deformed. The second mouth was actually a large hole formed because the gill arches weren’t connected to its mouth.

There was also a fish caught in Australia that had two mouths.

©Garry Warrick

Garry Warwick, the fisherman who landed this bizarre catch, caught the fish in Lake Bonney, South Australia. He told ABC “Both mouths are actually joined together. The top one opens and closes, but the bottom one looks permanently open.” Although he’s been a commercial fisherman for over 30 years, he says he’s never seen anything like this.

Facial deformities in which the creature or person has more than one of a particular facial feature – in this case, two mouths – is called diprosopus. It’s commonly associated with conjoined twins, although it’s not the result of two embryos fusing together, nor is it the result of them not fully separating. It’s caused that causes facial patterning acts abnormally. Unfortunately, creatures with two faces don’t usually survive because they usually have some degree of deformation in their internal organs, as well.

3. Fish with Human Teeth

An emperor fish was caught by a schoolteacher in the West Papu region of Indonesia. The teacher was astounded to find that the fish had flat, molar-like teeth that looked human.


He gave the fish to a student, who took it home to his family. They were all equally shocked when they discovered its teeth. Rather than eat the fish, they decided to freeze and preserve it. That’s probably a good thing because whatever unholy alliance that was forged in order to create this fish is probably not safe for ingestion.

2. The Monstrous Fish from Thailand

A Thai fisherman was out fishing and hoping to catch something worthy of a meal. Instead, he pulled in something that is pure nightmare fuel.


This fish has a long body that looks a bit like an oar, a giant mouth filled with sharp-looking teeth and, probably most notably, it doesn’t seem to have eyes. No one knows quite what it is. But, the bigger mystery here is: where are its eyes and how does it see?!

1. “Bird Fish”

This bizarre fish was recently caught in a river in Guizhou.

©Daily Star

It looks like a completely normal fish on the bottom half. But the head is where things get mad. Some people say that it looks a bit like the face of a pigeon, others say it looks like the face of a dolphin. What it definitely does NOT look like is the ordinary head of a carp that matches its body. Some people blame its apparent deformation on water contaminants. Others think that this is some sort of hybrid creature. But those in favor of the hybrid theory are not in agreement with what animals parented this bizarre creature.

©Daily Star

Unfortunately, testing cannot be done to shed light on its parentage, either, as the fish was released back into its natural habitat. What exactly is a bird/fish’s natural habitat anyway? Did it fly away or swim?

Most of the entries on this list died, either before or after discovery, which makes for an alarming mystery. What entry did you think was the most bizarre fish? Let me know in the comments down below! Thanks for reading.

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