The gills.
Fish breathe through gills these are their lungs.
Betta fish breathe air....yes... that's right... they breathe air. They breathe air because they have an organ by their gills that is called the Labyrinth's Organ which allows them to breathe air. They breathe air by coming up to the surface of the water. Then they gather air in their mouths and hold their breath underwater.
Lateral Line.
it means rotten fish breath like from a sun fish or a cat fish gross!
lateral fin
Yes. Fish and many other aquatic organisms have gills. The gill is a respiratory organ that extracts dissolved oxygen from water and excretes carbon dioxide.
*us
Fish use gills to extract oxygen from the water to 'breath' .
As any other fish of the water, they use there gills to breath.
NOSE!
Their nose.
because fish have gills and breath in water and we breath air through our lungs