Aquarium fish KILLING owners?

[Hope_WA]

Stingray venom is a complex cocktail comprised of a variety of polypeptides and enzymes. Some, especially the ones that trigger a pain response, do degrade when subjected to heat that will not damage flesh. However, not all the components are going to degrade at these relatively low temperatures. Don't forget, human flesh is also primarily made of proteins (and water) and those proteins don't degrade in water that isn't hot enough to cause more damage to the victim than the original sting.
Freshwater ray stings tend to cause more tissue necrosis than marine rays, and the enzymes that cause the necrosis are less susceptible to heat degradation than the proteins that trigger the pain and inflammation responses.

 

[hereticlosmorte]

again, it's case by case, and while i don't personally think anyone stung should stay home instead of going to the doctor's office, many have. these often are small incidents as well, even on this forum. of course, be safe and go to the doctor. i know i would had i been stung by mine.
cases of death often occur from not going to the doctor, combined with the necrosis, blood poisoning, bacteria from the wild rays AND the environment in the amazon, and infection from dirty wounds and fragments still in the person, and most of all, location of the tag.
people with lowered immune systems are also more susceptible to fatality than that of a healthy adult again with the considerations in mind.

for this thread alone, if a person died from a ray in captivity in their house, it wouldn't be instantaneous (realistically how many people would get a hit to the heart or neck/head to outright kill them in a home), it would be drawn out and they would know they need medical attention. (bleeding out from an artery hit is a different matter)

 

[Pomatomus]

I know it's a little off topic since they aren't fish but...

...it is possible to buy blue-ring octopus. And they are extremely deadly.

Also, there is a very common type of coral called palythoas that may produce palytoxin depending on the species. Not only can this potentially kill if it enters an open wound, but people have nearly asphyxiated when boiling rocks containing these corals. Native Hawaiians used to coat their spear tips with palytoxin to take down prey faster.

 

[hereticlosmorte]

I know it's a little off topic since they aren't fish but...

...it is possible to buy blue-ring octopus. And they are extremely deadly.

Also, there is a very common type of coral called palythoas that may produce palytoxin depending on the species. Not only can this potentially kill if it enters an open wound, but people have nearly asphyxiated when boiling rocks containing these corals. Native Hawaiians used to coat their spear tips with palytoxin to take down prey faster.

from what i've seen, blue rings have been found in the hobby, it would possibly depend the location if they are available or illegal.

that would be quite the surprise for the unsuspecting fishkeeper boiling that. wow.