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.
Where is there difference in the ncert textbook