1. How many species of fish are there?

Ans :    There are over 30000 known species of fish.

 

  1. Which is the smallest fish?

Ans :

 

Paedocypris is the smallest fish, the maximum size of the fish is 11 mm (or) 0.43 in.

 

  1. Which is the fastest fish?

Ans :

Black Marlin is the fastest fish with a speed of 129 km/h.