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Do fish yawn2007-11-24 23:11:13

i have gold fish and quite often they open there mouths really wide for ages just like there yawning. i've checked for pebbles as i know thty pick them up. it looks really weired

Answers:

Yes, fish do yawn. I have watched them do it for many years. It looks really cool and most of the larger species do it. I haven't really noticed it in the smaller species like guppys, tetras and danios, but I imagine they do it too, just quicker so we don't see it.

As for the people who said is was because they aren't getting enough O2. baloney! When a fish isn't getting enough O2, it is rapidly gasping at the surface of the water where there is more O2.

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No, actually their struggling to get air

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It's their natural 'expression',lol--not really a yawn.

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no there getting air or some just do that

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That's there way of telling you the oxygen is low in the tank.

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Yes, they do yawn. The others are right in saying they are trying to get air...but that's what yawning IS. We, too, yawn when we are oxygen deprived. It's not a bad thing; it's natural.

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no

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Aaaa, when they do that they want to tell you something, you must put your ear right next to the tank and listen carefully.