Surely you have heard of more than one of these species that we will show you below. If you are fond of underwater fishing and have traveled, you may have come across one of them. But beware! All of them are highly dangerous due to their venom, and they tend to attack if threatened.
The pufferfish, exquisite but potentially dangerous:
The pufferfish (some subspecies are known as toadfish) is classified as the most poisonous fish and the second if we talk about vertebrates. The toxin responsible for the high position of this animal in the ranking of the most poisonous is called tetrodotoxin. This substance is a neurotoxin that inhibits neuronal transmission which leads to weakness, paralysis and can even lead to death. This toxin is found in the liver, ovaries, intestine, and skin of the animal; the muscles are almost free, reaching relatively low levels at times, which in any case is within the safe for food. Only the most trained and certified cooks in the treatment of this species are authorized to prepare this fish for consumption. Its meat is highly prized in Japan.
The rockfish, be careful not to step on it:
Rockfish have risen in position in recent years according to some research. Its danger lies in the factor of its high degree of mimicry since it can resemble the rocks where it resides. It inoculates its venom through the spines on its back, which it spreads when threatened or when it is stepped on.
The venom can expel involuntarily when it is depressed, the more pressure is exerted, the greater the amount of venom injected. They inhabit the Indo-Pacific zone and northern Australia. The prick of one of these specimens can be painful, in addition to causing rapid swelling of the area, tissue necrosis, muscle weakness, temporary paralysis, and in very rare cases death.
Lionfish, don’t ever touch it:
This striking fish has poisonous spines on its dorsal, anal and pelvic fins, covered by a loose sheath that goes down and compresses the poisonous glands when the spine punctures tissue. The sting of a lionfish can cause severe pain, swelling, and in very extreme cases cardiovascular collapse. They usually inhabit the Indo-Pacific area, but it has become an invasive species; most notably along the Atlantic coast of the United States, where they are having a major impact on Atlantic coral reef communities.
Striped fish, just as beautiful as dangerous:
Stingrays are one of the species responsible for the majority of human poisonings, as they burrow into the sand on the seabed and are unintentionally stepped on by people as they enter the beaches.
The stingray venom is cardiotoxic. The blue-spotted and the southern are two of the most poisonous subspecies. The blue-spotted is endowed with blue dots on its back that serve as a warning to predators of its high venomousness.
Boxfish, do not approach under any circumstances:
The boxfish and the painted chapín are closely related to the pufferfish. Although they are not as poisonous as their relative, they do have an impressive way of defending themselves. When they feel in danger, or stressed, they secrete into the water a toxin that is produced in some cells of their skin, poisoning everything around them. The Hawaiian boxfish, in particular, secrete a toxin called ostracytoxin that destroys red blood cells.
Surgeonfish, watch out for its tail:
The surgeonfish is a species of fish that lives on coral reefs. This specimen attacks with spines found at the base of its tail. These remain inside the tail as long as the fish is not in danger. But when the specimen in question feels threatened, it extracts them. In addition to being sharp like knives, the thorns contain a large amount of poison that, if it reaches you, could cause death from Hypovolemia, that is, the blood flow in your body decreases until it causes death. Other symptoms that a surgeonfish attack can cause are hypertension and extreme pain.
Scorpionfish, don’t touch its fins:
Scorpionfish, which are in the same family as rockfish and lionfish, harbor venom in their fins. The bite of this fish can cause stabbing pain as well as almost instantaneous swelling that can spread throughout an arm or leg. It is usually found in tropical waters.
The viperfish and its deadly teeth:
The viperfish, which lives in the deep sea, has sharp teeth, with prominent lower fangs that reach the lower part of the eyes. This specimen has an external organ that produces light with which it attracts its prey. Until the prey approaches, it remains still to finally attack. Fortunately, this highly poisonous fish has no interest in humans.