Biology
Grade-10
Easy
Question
Which of the following fishes have no special means of obtaining oxygen but have high physiological resistance to oxygen depletion?
- Bullhead
- Bluegill
- Mosquito fish
- Labyrinth fishes
Hint:
A type of catfish that can survive in extreme conditions like low DO, brackish and warm water.
The correct answer is: Bullhead
- Bullhead are catfishes that can survive in extreme conditions like low DO, brackish and warm water
- These very tolerant fishes live in muddy water, with warmer temperatures and in water with lower levels of oxygen, which reduce competition from other fish
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