Tap water. But to keep fish healthy you will need to add a chemical called Water conditioner or Water ager. This simply removes any chlorine or chloride from the water as fish cant live in chlorinated water.
Water (obviously), fish food, a large bowl size (ask pet store what size of tank you need for a particular fish), proper lighting, etc.
because fish need it to breathe. just like humans need air to breate. to fish, water is air.
Saltwater fish require salt water, and fresh water fish need fresh water, you can't mix them, or the fish will die. You need to look at each individual fishes needs as to what temp they need their water to be. There are some saltwater fish that can survive in fresh water, but it is not healthy for them.
Depends on the fish.
Fresh Water
no tropical fish need warm water
It cant, fish need water to survive.
Yes. All animals need water. This includes fish.
Every fish lives in a different inviroment.If its a tropical fish and the water is to cold it will die.
They need water Fish can not process oxygen the same way mammels do. They get their oxygen throu molecules in the water.
Fish live in the water, so generally they only need food. But they get their oxygen from the water through their gills, so they will need the water to have dissolved oxygen at a proper level.
yes they do