They are probably fine. My bass and bowfin do this from time to time. I think they are just stretching out or something. Also it could be aggresion possibly. Not to sure how tiger muskies are on that subject.
Chad
Yawning is also a sign of high nitrate levelI have 4 Tiger Muskies who from time to time will do what I can only describe as a yawn - and I mean they open up really big (didn't know their mouths could be so big already at fingerling sizes).
My question is this: Is this due to a lack of oxygen or some other potential problem with the water?
Yawning is also a sign of high nitrate level
more harm than good..id git them lowered asapI had high Nitrites for about a month, but have not measured the Nitrates as of yet. What affect will Nitrates have on the fish?
more harm than good..id git them lowered asap