Sightings of a poisonous pufferfish in a popular European country could spell trouble for its booming tourist trade.

Found in deserts, its venom causes intense pain, fever, and convulsions, and can be fatal for children and the elderly. One ...

Researchers have documented the northernmost record of the highly invasive silver-cheeked toadfish, Lagocephalus sceleratus, ...

The blue-lined octopus (Hapalochlaena fasciata) is only a few centimeters long, yet it may be one of the most dangerous ...

Scientists have discovered that when mating, male blue-lined octopuses will inject a powerful, incapacitating neurotoxin into ...

The males have evolved to use a venom called tetrodotoxin (TTX) to immobilize females, which are normally around twice their ...

Scientists have found that male blue-lined octopuses inject venom and paralyse females during sex to avoid being killed and cannibalised by their much larger partners.

Some male octopuses tend to get eaten by their sexual partners, but male blue-lined octopuses avoid this fate with help from ...

Getty Images The venom used by the blue-lined octopus is "tetrodotoxin"—perhaps most famously known as the deadly poison found in pufferfish, whose meat is considered a delicacy but which can ...

The fish release a potent neurotoxin called tetrodotoxin as a defense mechanism, which in high doses is deadly. However, in small amounts, it may induce a narcotic effect. The footage showed the ...

But if that wasn’t enough, the pufferfish also has tetrodotoxin. This potent neurotoxin makes the pufferfish taste terrible to predators, and it can cause paralysis, illness, and even death.