They're designed for salt water, not fresh water! Just the way they are made. You can get aquarium salt from your local pet store, but don't put any in there if you have other Freshwater Fish that don't need it. Or get a tropical freshwater fish like mollies instead!
the marine fish would pretty much suffocate and die. so putting marine fish in fresh water is not a good idea.
Whatever the organism is it will die a dreadfully painfull death.
Explain what would happen if a piece of seaweed from the ocean was placed in a fresh water aquarium?
because there is a difference in salinity which means less salt there is alot less in fresh water
Some marine fish can live in fresh water. But most marine fish are adapted to salt water; because of the salt in the water their body needs to do things differently, and they are used to being in salt water. If you put them in fresh water, their body can't do the same thing, therefore most of them die. For more information, see the related question.
marine fish lay eggs in fresh water river
It is about osmoregulation. Salt water fish has some level of salt in its cells, which is low in concentration than marine water and more than the freshwater. If you put a saltwater fish in fresh water, excess amount of water will enter the cells of the fish and the cells rupture. This is why salt water fish cannot survive in freshwater.
If the fish are an Estuarine species it is possible that they could be slowly and gently converted to live in fresh water. They would however die of shock if they are taken from salt water and suddenly placed in fresh. If they are true marine fish from the Ocean, then they will never live in fresh water no matter what you do.
No; clownfish are marine (saltwater) whereas fighting fish/betta's are freshwater fish. They cannot be placed into the same type of water or aquarium.
an aquaruim is a place where fishes are placed with water inside it.
an aquaruim is a place where fishes are placed with water inside it.
No fish I know of can live in Aquarium salt. All fish need water to live in. If you are asking if a tiger barb (Barbus tetrazona) can live if it was placed in a marine (salt water) situation, then the answer is "No. Not for more than the few minutes it would take for it to die.