Is This Normal Tin Foil Barb Behaviour? Are They Short On Oxygen?

ParrotCichlid

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I've not owned many species of barb or tin foils before so I'm not sure if this is normal behaviour.

They constantly keep opening and closing their mouth over and over again as they swim. Is this normal? With any of the normal species I'm used to keeping like larger cichlids this would be a sign of low oxygen but maybe not with barbs?

The shoal consists of 2 normal and 2 golden Tin Foils.

Please check the video


Thanks guys
 

tetratetris

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Have they done this before? Most all of the fish i've do this like my neons and they're ok. For them it's just nuatrual I believe. Maybe just run an air stone just to be safe.

Hope this helps!
 
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