If a marine fish is placed in a fresh water equarium, will the fish be able to surviver ? Why or why not ?

If a freshwater fish is placed in an aquarium containing sea water, will the fish be able to survive? Explain giving reasons.

Name three fresh water and three marine edible fishes.

Why a fish can not servive out of water?

When a fresh- water protozoan is placed in marine water:

Many fresh water animals cannot survive in is marine environment? Explain .

Name three common fresh-water food fishes.