they drown
it dies
it would eventually shock the fish and kill them
They die because they can not live in saltwater, due to the salt.
Salt water
Fesh
fresh water fish
Saltwater fish don't live in freshwater.
Saltwater fish require salt water, and fresh water fish need fresh water, you can't mix them, or the fish will die. You need to look at each individual fishes needs as to what temp they need their water to be. There are some saltwater fish that can survive in fresh water, but it is not healthy for them.
saltwater fish need to breath in saltwater and not fresh water. just like we need to breath in oxygen and not carbon dioxide.
No, a brook is a small stream of fresh water. So the brook trout is a fresh water fish, not a salt water fish.
Saltwater
Some Can And Some Can't.