Cartilaginous Fish

+Cartilaginous fish (Chondrichthyes) are a class of jawed fish distinguished by skeletons made primarily of [Cartilage](/wiki/cartilage) rather than bone. This ancient group includes familiar species like [Sharks](/wiki/sharks) and [Rays](/wiki/rays), inhabiting diverse marine environments globally. They are characterized by placoid scales and typically lack a swim bladder.

+## See also

+- [Fish](/wiki/fish)

+- [Bony Fish](/wiki/bony_fish)

+- [Ocean](/wiki/ocean)