They can eat. and breathe
chalk goby
Many fish eat their own newborns.
His fish are named Brock and Swimmy
what do fish eat
Increases the fish's volume by filling the swim bladder with oxygen.
no because fishs are too big for them
fish breathe eat and move just like we do
aren't fish eggs called caviar?
eating other fishs
Depends, If the hook goes down the throat into the belly the fish is as good as dead. If the hook is in the hard tissues around the opening of the mouth there is a very good chance he will shake it free.
Paranah
They blow air bubbles which may mean a sign of lack of air or they may be pregnant and are making a nest for the eggs.