Question

why is air bladder required in pisces

Answer 1

Air bladder or gas bladder is a gas filled sac present in fishes. It helps in maintaining buoyancy.

Answer 2

✳️ A gas filled swim bladder or air sac is always present above the alimentary canal which act as buoyancy regulator. it enables the fish to stay at a particular depth without expending energy in swimming.

✳️ in some bony fishes, the swim bladder is used as lung for breathing air.

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