They are pulling the water they are swimming in across their gills. Therefore, Freshwater Fish are taking in a very dilute solution of salt water (> 0.9% salt) while Saltwater Fish are taking in a relatively concentrated solution of salt water (3-5% salt).
Fish Use Gills Instead of lungs. Gills Help fish to Breath. Fish Use Gills Instead of lungs. Gills Help fish to Breath.
gills
All fish breath through their gills, there is oxygen in water, as such, they take the oxygen through their gills.
All fish breath will gills so gills
Fish need gills to help them breath,if fish didn't have gills they wouldn't be able to breath they would suffocate and drown. Poor fishy!!:(
gills is important in fish because it helps fish to breath
gills and brain
they have gills.
to breath
To Breath.
With its gills.
Jawless fish breathe from gills.