scales or sometimes denticles
scales or sometimes denticles
operculum
no
they have very smooth body covering
The skin covers and protects the body.
the fishes body is not to eat only the inside
fish like
All fish have a body covering of scales.
front
so that they can move smoothly
integumentary, as in the skin that covers your entire body
Its an adaptation created over time in order to help them maneuver through their environment. Evolution to be frank.