Pouting Fish...

[Steffyboy]

Always wondered why fish open their mouths wide every now and again.
I always think they're blowing me a kiss (stupid thought i know) but can't seem to get a proper answer from Google.
They're not gasing for air as such, just every now and again, they open their mouths really wide for a second.
Can anyone help me or i won't sleep tonight!

 

[Ninjouzata]

I've heard it referred to as yawning but not sure if that is it either. I'd also like to know

 

[guppylovepuppylovelol]

I always thought that they were thirsty so they opened there mouths to drink. It is probably some other reason, but i like what you thought. Blowing a kiss

 

[stanleo]

I have seen the same behavior in most animals when they yawn. I have even seen my pet snake do it. Why wouldn't fish yawn too?

 

[Steffyboy]

Good point!
Always wondered what it was. I know it's not my water etc as it's spotless but a lot of them always seem to do it when I'm watching them for a while.
Maybe I'm boring them with all my talk of how beautiful they look!!

 

[techen]

We yawn due to lack of oxygen or so they say. Am fairly sure it's the same with fish. Large breath to increase oxygen.

 

[frapadoodle]

Well, could be a yawn. Could be stretching, or just a really good burp.