The correct option is
B WallagoWallago is a genus of catfishes. They belong to the family Siluridae. They have rays in their dorsal fin. They have caudal fin which has pointed and sharp edges. The caudal fin is separated from the anal fin. They are large and predatory catfishes. They are also called as freshwater sharks. They are also called as helicopter catfishes. Thus, the correct answer is option B.