TOP 10 MOST DANGEROUS FISH IN THE WORLD. As a diver, Oliners have seen thousands of different fish species worldwide. They’re still interesting and fascinating to see even if they can be dangerous. However, it’s important to be aware of the potential dangers in the ocean with its diverse mixture of marine life. We wrote this article from a perspective of not scaring you but educating you on what to avoid; today we focus on our top ten dangerous fish in the sea:
THE PUFFER FISHThe puffer, also called a swellfish or blowfish, inflates when disturbed or threatened. They have a dangerous substance called tetrodotoxin in their liver, ovaries, intestines and skin that affects the brain of its victim. When it comes to physical toughness, these fish live up to their reputation with extremely spiky skin and tough survival instincts. They are ranked among some of the most poisonous marine animals found in our oceans.
- THE RED LIONFISH
The Red Lionfish is a venomous fish, capable of producing painful puncture wounds. This species is well known for the pattern of bold zebra-like stripes on the body, which has given it its popular name. This reef-dwelling fish lives off proteins that are in turn procured by lightning-fast reflexes and camouflage. The red lionfish is one of the most common species, native to the Pacific Reef ecosystem, which this dangerous predator relies on and eats primarily small fish and shrimp that are not poisonous to predators. If a human were to be stung by one, it would not be fatal but it would be extremely painful and could cause nausea along with difficulty with breathing.
- THE GREAT WHITE SHARK
Sharks are powerful predators that are well-known for their abundant food sources. However, there’s an exception to this rule: the great white shark. This species of shark will only take a single bite before retreating, which means it is not usually the culprit in attacks. The top five places you should dive with great white sharks are known as Neptune Islands, Australia, Gansbaai, Isla Guadelupe and Tiger Beach in the Bahamas.
- THE TIGER FISH
Tigerfish are infamous for their razor-sharp teeth that can inflict serious injuries on unsuspecting swimmers. They have markings, depending on the species, with lengthwise stripes and dagger-like teeth that protrude when the mouth is closed. Not recommended for swimming!
- THE MORAY EEL
These voracious predators have a wide variety of highly-adaptable, extremely predatory behaviors. They use their all-purpose vision to hunt for prey and ambush unsuspecting victims, but monitor their prey without moving very much. There are about 80 species of moray eels, which are found in tropical and subtropical waters across the globe.
- ELECTRIC EEL
The electric eel is a long South American fish that uses its electroshock to stun its prey. The electric eel can grow to be massive and measuring almost 3 metres long with a weight of nearly 200 kg. Generally sluggish, it prefers slow-moving fresh water where it’s able to surface every few minutes to gulp fresh air. This powerful charge emitted by the eel should be no problem for humans, at around 330 – 650 volts.
- THE BOX JELLYFISH
One of the most dangerous marine animals is the Box Jellyfish, which can kill with its venom in just minutes. Its poison attacks the heart and cardiac activity, causing stings that are extremely painful. On top of all this, it’s probably going to kill you if injured by one.
- THE CANDIRU
The scaleless, blood-eating fish is commonly found in the Amazon River. Allegedly, the eye-like pores on its body secret blood, which it feeds on. The only downside to this little fish is that it’s known to also attack humans. Entering through the urethra or gills as small spines and gills cause inflammation and even death in the unfortunate human victim.
- THE STONEFISH
Stonefish are commonly found in the tropical waters of the Indo-Pacific where they live in shallow waters. Contact with these venomous fish can sometimes be deadly and excruciatingly painful, as they try to dodge their predators by blending into their surroundings almost completely. When stepped on, Stonefish will inject high quantities of venom into its victims, which can lead to a painful wound or even death.
Piranhas are some of the most famous fish in the world. Often featured in movies as the bad-guy’s demise, piranhas have a notorious reputation for their razor-sharp teeth. They can apply a bite force that averages 20-30 times its own body weight and can crush even the largest of animals in just a few minutes. Have you come across any of the world’s most dangerous fish? Let us know below and we would love to hear from you!