Chondrichthyesnoun
the class of fishes comprising the cartilaginous fishes, which includes the sharks.
Chondrichthyesnoun
cartilaginous fishes
Chondrichthyes
Chondrichthyes (; from Ancient Greek: χονδρ- chondr- 'cartilage', ἰχθύς ichthys 'fish') is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fishes, which have skeletons primarily composed of bone tissue.
Osteichthyesnoun
a class of fish having a skeleton composed of bone in addition to cartilage
Osteichthyes
Osteichthyes (), popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue. They can be contrasted with the Chondrichthyes, which have skeletons primarily composed of cartilage.