Bony and cartilaginous fish
Fish are separated into two main types depending on what their skeleton is made of. Bony fish have skeletons made of bone, while cartilaginous fish have skeletons made of cartilage.
The bony (bones) fish was driving a very powerful go kart (cartilage).
Cartilaginous skeleton of a shark.
Bony skeleton of a fish.
Most fish (around 90 per cent) such as salmon and sticklebacks have skeleton made of bone.