Rohu is a species of fish of carp family,found in rivers in south Asia. it is an reaches a maximum length of 2m and weight of about 110 may reach even greater weights in the northern part of Asia.
shark belongs to the class is an carnivore.they range in size from the small dwarf lanternshark,a deep sea species of only 17 centimeter in length,to the whale shark,the largest fish in the world ,will reaches approximately 12 meters in length.sharks are found in all seas and are common to depths of 2,000 meters.their speed is 15km/h
Rohu belongs to subclass ostichthyes whereas shark belongs to subclass condrichthyes.