Question

Which among the following is a scale-less fish?

• A. Scoliodon
• B. Remora
• C. Catfish
• D. Labeo

Answer 1

The correct option is C Catfish

Scales are the projections on the surface of the skin of an animal's body and are dermal in origin. Generally all fishes have scales for protection with some exceptions.

A. Scoliodon is known as the dog fish because it has a great sense of smell.

B. Remora, also known as sucker fish, is a ray finned fish.

C. Catfish is the fish that has long whiskers and thus, their mouth resembles the mouth of a cat. These fishes do not have scales and instead of scales, thick mucous layer plays the role of protection.

D. Labeo, known as the carp fish, is found in clear and sluggish streams and rivers.

So, the correct answer is 'Catfish'.