So, I posted a picture of my tank in another thread; If you'd like to see it again to fully understand what I'm talking about, here's the link. http://i53.tinypic.com/zyja6f.jpg
So. Pretty much; My tank is able to produce bubbles that rise up from the center of the tank, to the surface.
I don't usually like to keep them on, however since they make a LOT of movement on the water's surface, along side Aoi-Hiiro's filter, it makes for quite a bit of movement along the surface to where he has to dash to the top of the water to get a gulp of air and then swim back down.
I'll sometimes turn them on (for about an hour to two hours) to break the surface of the water a bit more rather than just the filter's soft little flow. Also; the bubbles help oxygenate his tank.
However.. Since I don't have them on a lot, I'll turn on the pump for a split second to let a small jet of air go through the tubes and to make a small stream of bubbles rise to the surface so my fish knows they're coming and wont spaz out too much.
I turned them on today after my warning and Aoi started to furiously swim near the top of his tank and it looked like he was either trying to attack, or eat the bubbles...I'm not sure which.
I can't overly tell if he's freaking out by them, or playing with them. (I'd like to think the latter of the two, but I don't wanna be wrong)
He doesn't flare at them as if he's threatened, and he doesn't show signs of stress (like staying at the bottom of his tank or hiding behind his plants)
In fact..He stays near the top as if looking for them. Again, not sure if he's looking for them to chase them again, or because he's being territorial and keeping an eye out.
What do you guys think?