Since our ocean is the least explored region, most of the species of marine life are still unknown to us. It is said that more than 30,000 different species thrive in Earth’s oceans and bodies of fresh water. Read on to learn about some of the dangerous fishes you should keep away from.
10. Puffer Fish:
Pufferfish or blowfish is known for their ability to inflate when provoked or scared. They turn themselves into an almost inedible ball several times their normal size. Almost all pufferfish contains a toxic substance called tetrodotoxin. Tetrodotoxin is deadly for humans. It is about 1,200 times more poisonous than cyanide. One pufferfish has enough toxin to kill 30 adult humans, and there is no known antidote.
Candiru or the vampire fish, are translucent and grows to a length of about 2.5 cm. They are a species of parasitic freshwater catfish in the family Trichomycteridae local to the Amazon Basin. They normally feed on blood and mostly found on the gills of larger fish. There have been several reports of these creatures attacking humans and lodging in the urethras of men and women. The infection caused by this fish is said to be hard to remedy, even with surgery.
8. The Great White Shark:
Great white sharks are the biggest predatory fish on Earth. Pups of this fish weigh 50-60 pounds at birth and they grow to an average of 15 feet in length. They can detect one drop of blood in 25 gallons of water and unlike most sharks Great Whites are warm-blooded. Mouths aligned with up to 300 triangular teeth arranged in several rows, they even have organs that can sense the tiny electromagnetic fields generated by animals.
7. The Red Lion Fish:
Red-and-white zebra stripes, long, showy pectoral fins, and generally cantankerous demeanor, Red Lionfishes are truly beautiful until you try to touch them. Then they will release their venom delivered via an array of up to 18 needle-like dorsal fins. The sting from a lionfish is incredibly painful to humans and it can cause nausea and breathing difficulties but is rarely fatal.
6. Electric Ray:
Electric ray or crampfish are the most common electric animal in the world and can be found worldwide in warm and temperate waters. There are various species of electric ray, and they range in length from under 30 cm to about 2 m. Composed of modified muscle tissue, the electric organs are in the disk, one on each side of the head of an electric ray. The electric shocks released can reach up to 220 volts and are strong enough to down a human adult.
5. Goonch Fish:
Bagarius yarrelli or the Goonch fish reaches up to 6.6 ft in length and weighs over 200 pounds. They are found in large rivers, including rivers with fast current, mostly in South Asia. Goonch fishes were blamed for the Kali River attacks, a series of fatal attacks on humans. The man-eating Goonch catfish were responsible for a number of disappearances in three villages on the banks of the Kali River, between 1998 and 2007.
Piranhas are known for their sharp teeth and voracious appetites. It is estimated that piranhas have 30 to 60 species and they inhabit several of the major river basins in South America. They have a taste for meat and they are important scavengers and predators in their native rivers, and they often resort to cannibalism if food gets limited. Although, piranhas attacking human beings are quite rare.
3. The Tigerfish:
Tigerfish is considered to be one of the most dangerous predators. These African fish are found in many rivers and lakes on the continent and the goliath tigerfish is among the most famous tigerfish. The largest Goliath tigerfish till recorded weighed 70 kg. Tigerfish have interlocking, razor-sharp teeth, along with streamlined, and extremely aggressive and who often hunt in groups.
2. The Box Jellyfish:
The venom of the box jellyfish is considered to be among the most lethal in the world. It contains toxins that attack the heart, nervous system, and skin cells. Overpoweringly painful, human victims have been known to go into shock and drown or die of heart failure because of their venom. The box jellyfish has up to 15 tentacles in each corner of the bell and that can reach 10 feet in length and each tentacle has about 5,000 stinging cells
1. Electric Eel:
An electric eel can grow up to 6 to 8 ft. and they live in the murky streams and ponds of the Amazon and Orinoco basins of South America. They can create an immense electrical charge to stun prey and dissuade predators. The electric eel contains electric organs with about 6,000 specialized cells called electrocytes that store power like tiny batteries.