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they have an organ called a swim bladder. It is filled with gas and it keeps them afloat.

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13y ago
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12y ago

The bladder controls the buoyancy in fish by varying the gas pressure inside.

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11y ago

The swim bladder keeps the fish upright in water.

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12y ago

The air bladder located pretty much central of the fish.

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11y ago

swim bladder

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10y ago

the swim bladder

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Q: What special organ helps a boney fish float?
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