Which one of the following is not a fish?

A. Silver fish

B. Milk fish

C. Bombay duck

D. Dog fish

Answer: Option A

Solution(By Examveda Team)

Out of the given options, Silverfish is not a fish it is an insect. It is a species of small, primitive, wingless insect in the order Zygentoma.
It is silvery or light grey, combined with a fish-like appearance in its movements.