Difference between cartilaginous fish and bony …

Difference Between Cartilaginous Fish and Bony Fish Cartilaginous Fish Bony Fish Biological Classification Cartilaginous fishes fall under the class Chondrichthyes All bony fish fall under the superclass Osteichthyes Endoskeleton Primarily composed of cartilage Primarily composed of bone Operculum Present Absent Tail Heterocercal in nature Homocercal in nature Ecosystem Members primarily inhabit marine ecosystems. However, some exceptions are present Members inhabit both marine and freshwater ecosystems Mode of Fertilization Internal (exceptions are present) External Swim Bladder Absent. Buoyancy is maintained with oil stored in livers. Present (except for some bony fishes that dwell in the deep). Example Great white sharks, whale sharks and every other species of sharks Sunfish, Tuna, Herring, Trouts etc