How does a flying fish breath?

Flying fish spend a very small amount of time above water (at max a fee seconds ) . Therefore they don't need to breathe whilst airborne and will just continue to breath using their gills when below water . read more

And the flying fish is a true .fish with a pair of gills for breathing water and no lungs at all. Being a sensible fellow, the flying fish does not even try to breathe while he is gliding through the air. No more would you try to take a breath while under water. An expert diver can hold his breath for several minutes under water. read more

Flying fish spend a very small amount of time above water (at max a fee seconds ) . Therefore they don't need to breathe whilst airborne and will just continue to breath using their gills when below water . read more

Long term would be a disaster even if the gills are kept moist because CO2 would not be exchanged and would just build up to dangerous levels in the blood. So no, flying fish don't need to do anything differently before jumping like "holding their breath", and they are not out of the water long enough for it to become a problem. read more