Differentiate between Shark and Rays

animal-kingdom
cbse

#1

Difference between Sharks and Rays:
Sharks:
1.Body is laterally compressed.
2.Lateral.
3.Distinct but not fused with the head.
4.Present but small and lateral.
5.Surface feeders.
6.Fast-swimmers fishes.
7.E.g. Scoliodon and Zygaena.
Rays:
1.Body is dorsoventrally flat.
2.Ventral.
3.Fused with the head but large sized.
4.Large and dorsal always present.
5.Bottom feeders.
6.Slow swimmer fishes.
7.E.g. Torpedo, Trygon.


#2

Where is there difference in the ncert textbook