I don't have no clue there lots oxygen in my aquarium Water change each WednesdayWhy do aro yawn? Is there not enough oxygen inside the tank? Or is he boring?
Lots of predators with extendable jaws do this, such as arowana, perch, Datnoid, grouper, bass. I think it is purely a jaw/mouthparts alignment procedure. Preparing for prey take down.Why do aro yawn? Is there not enough oxygen inside the tank? Or is he boring?