Bony fish, scientifically classified under the superclass Osteichthyes, are the most diverse group of fish, making up over 96% of all living fish species [ Britannica: Bony fish]. They are characterized by having skeletons made mostly of bone, unlike cartilaginous fish like sharks and rays. Bony fish can be found in almost every aquatic environment around the world, from freshwater lakes and rivers to the deepest parts of the ocean.
