They are red because you can see the colour of the red blood through the thin walls of the gills. The gills carry the oxygenated blood into and around the fish just as your lungs do for you.
they are bloody
The fishes have gills for breathing
cartilaginous fishes have lamelliform gills. bony fishes have filiform gills.
zombie kills Mr hills Dr gills fishes gills red wine spills
Fishes having gills are more. Also some fishes have lungs.
No they have gills
Gills
yes
their gills
gills
Correct
In their mouth.