Question's Short Description
Bony fish possess calcified skeletons; sharks have skeletons of flexible cartilage.
Question's Long Description
Bony fish (Osteichthyes) rely on internal calcified skeletons and gas-filled swim bladders for buoyancy control, whereas sharks and rays (Chondrichthyes) possess flexible cartilaginous structures and oily livers for floatation.
manoj
2026-06-18 18:28:43Presence of an internal swim bladder for precise buoyancy adjustment.