Which one of the following is not a fish?
A
Silver fish
B
Milk fish
C
Bombay duck
D
Dog fish
Correct Answer: Silver fish
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.