Question

What is it called when fish breathe?

Answer 1

Aquatic Respiration:

1. Aquatic respiration is the term used when fishes breathe.
2. It is the process of gaseous exchange with water by an aquatic organism, receiving O₂ from oxygen dissolved in liquid and removing carbon dioxide and other metabolic products into the water.
3. Fish need their gills to breathe and require a steady supply of oxygen. Gills are found beneath the operculum which is called gill slit.