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Which of these is not a fish?
- A Blue whale
- B Shark
- C Gold fish
- D Cat fish
That's Correct!
It's Wrong!
Blue whale is not a fish because it is a mammal, not a fish. While sharks, goldfish, and catfish are all types of fish, blue whales are marine mammals that belong to the group of cetaceans. They are the largest animals on Earth and breathe air through lungs, unlike fish that have gills to extract oxygen from water.
