Is this a problem with my fish?

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oscarkb

Feeder Fish
MFK Member
Jan 29, 2006
28
0
0
42
Dallas, TX
I have noticed lately that my fish, one tiger oscar and a Jack Dempsy, keep opening their mouths like in a yawning kind of way. I remember reading somewhere about this but i wasnt for sure what it said. Is this a problem with not enought filtration or something else? Thanks.

I have a 55 gal.
nitrate is 5-10
ite 0
hardness 250-300
alk 200ish
pH 8
 
Unless they are also gasping or flashig while gaping it sounds pretty normal to me.
 
My LMB does that all the time...you're good.
 
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