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Blacknijapowerr Blacknijapowerr
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6 years ago
The text points out that the swim bladders of deep-sea fishes that migrate over large vertical distances are nearly filled with lipids, leaving space for only a small volume of gas, whereas deep-sea fishes that do not make large vertical migrations
 
  have more gas and less lipid in their swim bladders. What is the functional significance of this difference?
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6 years ago
Lipids do not expand and contract when the external pressure changes, so a swim bladder with a lot of lipid and a little gas has only a small change in volume as the fishes move up and down. That is good for fishes that migrate over large vertical distances.
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