how do saltwater snails survive?

[maxwellag]

I have read that most snails are hurt by salt, but there are saltwater snails...

 

[Homer8]

freshwater fish are hurt by salt but there are saltwater fish

 

[maxwellag]

Then how come a lot of things says that when you quarantine a fish you should add some salt and turn up the heat?

 

[o.jonathan.o]

Then how come a lot of things says that when you quarantine a fish you should add some salt and turn up the heat?

To treat for ick and the salt will kill the parasite a fish may have. Never use salt with freshwater snails

 

[Homer8]

The salt you use in QT is different then marine salt and there are a lot of fish that cant tolerate aquarium salt either. Especially many types of catfish. It burns their skin.

 

[absolutangel04]

Osmotic regulation in organisms can be a bit complicated, but the basic idea is that hormones regulate how much salt is kept int the body by the organs and how much is released. Salt water snails release more salt and fw snails keep more. Organisms that can switch from fw to sw have hormones capable to regulating the change internally.
Like the others said, the salt used in qt is NOT the same as marine salt. Most fw snails do not tolerate qt salt very well because they do not have the proper hormonal balance to get it out of their systems.