Point out the difference between dog fish and cat fish.

Answer»

S. No.	Dog fish (Cartilaginous fish)	Cat fish (Bony fish)
(i)	It belongs to sub-class Chondrichthyes.	It belongs to sub-class Osteichthyes.
(ii)	Body is streamlined and divisible into head, trunk and tail. Mouth ventral. They are marine cartilaginous fishes. e.g., Scoliodon.	It is a bony fish and its endoskeleton is made up bones. Mouth is mostly terminal e.g., Clarius (magur).

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