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It filters the water out. Basically the 'breath in' water and take the oxygen from it and the water filters out through the gills

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12y ago
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14y ago

http://ajpregu.physiology.org/cgi/content/full/285/6/R1269

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13y ago

Surprisingly, fish breathe air. Only difference is, they extract the air from the water. The Gills let them do that, so yes they let them breathe.

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13y ago

The main function of gills is to extract oxygen from water and thus enabling fish to 'breath'.

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13y ago

Fish use gill to breath, they do this by taking in the oxygen from the water and then using it for respiration.

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13y ago

Gills are just like LUNGS for them they take oxygen from water through gills. They are part of there respiratory system.

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8y ago

A fish's gills - are their equivalent of our lungs. They absorb oxygen from the water.

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15y ago

Because they can breath.

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Q: What is their function of the gills in a fish?
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