If by clear water you mean freshwater than the fish will have all sorts of problems. It will be more likely to get a disease, stress the fish out, weaken its immune system, and will kill the fish.
energy is tranferred from insects to fish in this system by?
clear, if your water is cloudy then you might want to check your filter
Channel catfish (Ictalurus punctatus) is a freshwater species.
If the fish are fresh water fish the kidneys would not work. The fish would die.
They die
they will die
they drown
Your fish tank may look foggy due to a buildup of bacteria, algae, or debris in the water. To clear it up, you can try cleaning the tank, changing the water, reducing the amount of food you give your fish, and adding a water clarifier or filter to improve water quality.
harry clear water
it would eventually shock the fish and kill them
the fish needs to be in warm water that is just right. then leave the fish alone in peace and it will be fine.(:
They die.