You just received a freshwater aquarium as a gift and decide to add more fish. when you get to the pet store, you find that the
most beautiful fish are saltwater animals, but you decide to buy them anyway. what will happen when you put your expensive saltwater fish in your freshwater aquarium?
When you do that the fish will die. That is because it will take too much water in it and die from it, or rather, the fish's cells will take too much water in.
