bubles coming out of fishes mouth

nooberpie

AC Members
Nov 25, 2004
42
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0
hey, i was wonering why some of the fishes in my aquarium had bubbles coming out of thier mouth, and then they bubles go back in. ever since i took out my airstone, my fish have been doing it, well, i dont kno exatly. my LFS said that my powerhead was like a giant air stone. it doesnt look good when my fish do it.
 
I have a clown fish that does this too.

He will go to the surface, and looks as if he bites the surface then dives down like three or four inches and burps out a bubble.

I don't think insufficient oxygen is problem since I have plenty of water movement and good surface turbulance.

This is a curious behavior.
 
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