Fish gills are not suitable for air ventilation because, gills cannot function without water flowing through them. Gills are especially evolved and are an adaption of fish to breath under water.
Fish pass water over their 'gills' the gills extract oxygen from the water.
Gills are designed to absorb oxygen only from water, and can only work if water is passing through them or they will collapse. When a fish is taken out of the water, the oxygen-absorbing filaments of the gills flatten out and the fish suffocates because it's gills are not made to absorb oxygen directly from air.The simple answer is that gills colapse when removed from water as they are adapted to water which is more dense than air.
Fish get their air from the water, their gills separate water form air.
they dont. Oxygen in the water through there gills
If your questions is do gills help fish breathe, than yes, they extract the air from the water, and into the fish. If your questions is do gills help fish breed, than no, they do not.
All fish have lungs and gills. The gills extract the air from the water.
Of course they can all fish have gills which allow them to breath in water.
There is not enough Oxygen in the air for the fish to breath. Water has just the right amount of air (O2) that the fish need and in the right proportions. Fish breath in water with gills. Water is capable to holding within it a very large amount of Oxygen. So it is super-concentrated. But the O2 in our air is far less concentrated then in water, so the fish try to gulp the air through and into their gills, but the gills cannot easily find or absorb the O2 from the regular, unpressurized air.
no they have gills meaning they are fish not air breathers
Lungs are what air breathing creatures use. That is how they evolved. Gills need to have water flowing over them so they work in water. So Lungs won't work in water and Gills won't work in air.
Whales breathe with lungs, and fish use gills.
because fish have gills and breath in water and we breath air through our lungs