saltwater has salt in it, freshwater does not.
A fresh water swimming pool is a swimming pool that does not use a saltwater chlorinator. A pool that used a salt water chlorinator has salt added to it to so that a salt water chlorinator can electronically convert part of the salt into chlorine. A fresh water pool has chlorine added to it directly either manually or Automatically.
Fresh and salt water are very different for one key reason, fresh water doesn't contain salt and salt water obviously does. There are different flora and fauna in fresh and salt water for this reason.
Salt water has salt water in it and is bad for you, fresh water has no salt water in it and is good for you.
No.
Fresh water contains no sign of salt, while on the other hand salt water contains salt
There are many different catfish species, salt water and fresh water.
Remove some of the water and refill it with fresh water.
Salt increases the density of water, thus makes it easier to float.I've always had troubles floating while swimming in fresh water, but the difference when swimming in the sea is quite noticeable.There are many notes of people doing experiments with floating eggs with salt water versus fresh water.
Salt water contain dissolved sodium chloride; chemical and physical properties are different compared with fresh water.
Drain some water out, a little at a time, and add fresh water.
There are fish that are commonly called "Bream" in both fresh and salt water.
Currents and thermal gradients aside, salt water is slightly more dense than fresh water, so (at the same depth, for the same temperature) the pressure in salt water will be creater than for fresh water. The difference in pressure will be (pressure in fresh water) x (density of salt water/density of fresh).