Question

Both bony fishes & cartilaginous fishes have ………………..

Fins.



An oily liver.



A swim bladder.



Skeletons made of bones.

Answer 1

The answer is fins

the oily liver is specific to cartilaginous fish

the swim bladder is specific to bony fishes

the skeleton made of bones is specific to bony fishes

Answer 2

Both bony fishes and cartilaginous fishes have Skeletons made of bones.