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B
Catla
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C
Hippocampu
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D
Rohu
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Solution
The correct option is A Shark Sharks have a cartilaginous endoskeleton and hence, belong to the class Chondrichthyes and to the superclass Pisces. They are mainly marine fishes with an exoskeleton made up of placoid scales. They have heterocercal tails and lack an operculum.