Why freshwater fish Can't live in salt water and vice Versa
Saltwater fish can live in salt water since they have always lived in it and they are able to get it out of their selves. Once the saltwater fish drink the salt for hydration, their kidneys pump the excess salt into their urine so they can get rid of it. Freshwater fish can’t get rid of the salt (if it gets into their body) because they don’t usually have it in their freshwater habitat.
When a freshwater fish touches salt water, the water comes out of them and they get dehydrated. When a saltwater fish is near or exposed to freshwater, the water flows into them filling up cells and either the cells burst, or they stop working.
Basically if a saltwater fish was put into a freshwater body of water, its cells would stop working and it would probably die. Same thing with a freshwater fish. If it was put into a saltwater body of water, it would get dehydrated and most likely die.
Basically, being in the right habitat, or right type of water is the number one priority for a fish. If a fish was not in the right type of water, it would die.
When a freshwater fish touches salt water, the water comes out of them and they get dehydrated. When a saltwater fish is near or exposed to freshwater, the water flows into them filling up cells and either the cells burst, or they stop working.
Basically if a saltwater fish was put into a freshwater body of water, its cells would stop working and it would probably die. Same thing with a freshwater fish. If it was put into a saltwater body of water, it would get dehydrated and most likely die.
Basically, being in the right habitat, or right type of water is the number one priority for a fish. If a fish was not in the right type of water, it would die.