They live in freshwater. They eat stuff. They like to swim. They don't usually do well in saltwater.
It is okay for them to swim in saltwater because dogs swim at the beach all the time. But, you should clean them off with fresh water because they have salt all over their bodies just like how you take a bath after being at the beach.
fresh water is better than salt water fish as it is my choice
Salmon caught in saltwater typically have a fresher taste compared to those caught in freshwater.
Saltwater is a solution because you can get fresh water and some salt and mix it and then you get saltwater.
salt
Saltwater
with its tail
Yes.
Salt water is denser that fresh water, so a swimmer (and ships) float higher in saltwater.
Rain water is fresh water and does not have salt. Saltwater is not fresh and does have salt.
Salt water