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A Hydrostatic Function of the Accessory Respiratory Organs in Air-breathing Fishes

Abstract

ACCESSORY respiratory organs in fishes have generally been thought to be concerned with breathing atmospheric air1. That, like any other gas-filled space, they can also be connected with the perception of hydrostatic pressure has not been reported earlier. In fishes, perhaps the very existence of a swim-bladder, which takes the major role in regulating the density of the fish2 and functioning as a hydrostatic organ3, has diverted attention from other gas-filled organs which may have a similar function.

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References

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QASIM, S., HASAN, R. A Hydrostatic Function of the Accessory Respiratory Organs in Air-breathing Fishes. Nature 191, 396–397 (1961). https://doi.org/10.1038/191396a0

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