A meiacanthus nigrolineatus, which is a poisonous fish from the family of fang blennies.
They don't think the pressure-drop agents would be of any clinical use in people with high blood pressure because the drop is fast but fleeting.
The science behind the pain-free bite from an otherwise unassuming little fish could lead to the development of new painkillers. Bitten fish then become slower and get dizzy once the venom starts to act on their opioid receptor.
Experiments using lab mice found the rodents showed no sign of pain once injected with the fish venom.
Their venom, which includes opioid peptides and components found in the venom of cone snails and scorpions, is the only one of its kind to be discovered in nature. "Fish with venomous dorsal spines produce immediate and blinding pain. They would be more likely to drown than win gold".
Co-author Dr Nicholas Casewell of the Liverpool School of Tropical Medicine said another surprise from the study was the evidence suggesting that fang blenny fangs evolved before the species' venom. Scientists reported observing blennies engulfed by the mouths of larger fish, which then experienced a "quivering of the head" and spat the blenny out unharmed, the study authors wrote. The unique makeup of the substance could potentially be used to develop new painkillers for humans. That might not seem like a great defensive move, but with fang blennies, the bites are laced with opioids, disorienting potential predators of the fish long enough to allow them to make a getaway. Afterward, they returned the fishes immediately to the reservoir, and the swabs were placed inside a solution to draw out the venom. "The venom causes a drop in blood pressure probably from the presence of these peptides". The blood pressure of the mice, however, plummeted by almost 40 percent. Instead of creating pain, the blenny's poison simply serves as a way to tiresome the predator's senses while the small fish to swims away.
In a new study, researchers analyzed venom samples from the fishes' tiny fangs.
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Fang blennies - colorful Pacific region fish - in the Meiacanthus genus may be small, but they pack a very serious bite.
This means that we should protect the environment in which the venomous fang blenny lives. "While the feeling of pain is not produced, opioids can produce sensations of extremely unpleasant nausea and dizziness [in mammals]".
Researchers described the uniqueness of the venom residing in the little fangs.
'Their secret weapons are two large grooved teeth on the lower jaw that are linked to venom glands'. They fearlessly take on potential predators while also intensively fighting for space with similar sized fish.
This wouldn't be possible without protecting its habitat: Australia's world-famous Great Barrier Reef, which is now dying because of the effects of climate change.
Fry said that the venom could be the source of the next blockbuster painkiller, which necessitates the protection of these creatures' marine habitat.