Question

How do water animals such as fish get oxygen for breathing?​

Answer 1

Instead of breathing air, fish must get their oxygen from the water. This process requires large volumes of water to pass through absorption surfaces to get enough oxygen into their bodies using their mouths and gills. ... This carbon dioxide will then be carried out of the bodies through the gills.

Answer 2

Fish has gills to breath in water.

with the help of the gills it can take oxygen in water.