Have streamlined bodies; to reduce friction;
Body is covered with scales; which overlap backwards; to reduce friction;
Skin produces mucus; which covers the body making it slippery; reducing friction;
Have swim bladder; which stores air; for buoyancy hence make the fish float;
Myotomes/muscle blocks; that contract alternately; for forward thrust in water;Lateral line
system; on either side of the body which is sensitive to pressure and water currents;
Possess fins; that are used for locomotion: tail/caudal fins; for propulsion; dorsal; and anal fins;
prevent rolling; pectoral fin; used for breaking/steering; prevents yawing/side to side
movement; controls pitching; pelvic fins; for steering/pitching;
Kavungya answered the question on May 13, 2021 at 13:48
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