Question

How we willl identify a cartilage fish from bony fish

Answer 1

cartilage are flexible than bones. so, a chondricthyes can be classified into osteichthyes

Answer 2

Difference between bony fish and cartilaginous fish :

1. Bony fish have a bone skeleton whereas cartilaginous fish have a skeleton made of cartilage.
2. Bony fishes can either be fresh water or marine water fishes but the vast majority of cartilaginous fishes survive in marine, or saltwater, habitats.