Air as such is not needed by most fish but disolved oxygen is an absolute neccessity in the water. That is why boiled water is a 'no no'. Boiling removes the gasses from the water. Most tap and rainwater tank water contains sufficient O for fish to live in quite happily provided a properly cycled filter is in use to remove the Ammonia and Nitrite generated by the fish.
because like us they need water to live it's like our air without air we couldn''t survive. So fish need water to survive because it is a basic need
They need oxygen definitely to survive. They get this from filtration through their gills. As far as light is concerned, they do not need light to survive as many live below the layer in the ocean that light can permeate. There are fish that lice in total darkness. They have adapted over the years to exist in these conditions.
A betta does not breathe air all the time, it is a fish with gills that lives in water, and it certainly looks like a fish. However, they do need to have an air space at the top of an aquarium and can survive in a wet tissue. They are fascinating fish, but they are definitely fish.
No, fish cannot survive in distilled water because it lacks essential minerals and nutrients that fish need to survive.
Fish extract oxygen from water using gills, but gills cannot extract oxygen from air. A few species of fish (e.g. lungfish, snakehead) have some ability to extract oxygen from air (e.g. lungfish use a modified swim bladder like a lung) and can survive short trips across dry land from one shallow pool to another.
Most archaebacteria need to have air and water to survive. Some archaebacteria don't need air only sunlight to survive.
fish need air because they won't be able to breath if they didn't have air, and fish need air badly because they spend most time in the water. fish need air as much as we do.
it depends on the fish.
TheType of fish that you put in the tank and what they need to survive
the need fish to survive
they need water to survive and they also need food (fish).
No, fish cannot survive in milk as it does not provide the necessary oxygen and nutrients for them to live. Fish need water to breathe and milk would not be a suitable environment for them to survive.