Question

Why fish have smooth scales on their body​

Answer 1

Answer: Scales protect fish from parasites as well as predators and reduce friction with the water. Scales also provide a flexible covering for a fish allowing it to move easily while swimming.

Explanation:

Answer 2

Step-by-step explanation:

Fish have scales for many reasons. Firstly, to protect the skin of the fish from attacks from predators, parasites and other injuries. Secondly, scales overlap each other in the same way that an armour would protect a person. Hence, providing a layer of protection for the fish.