Originally Posted by FallenMessiah
Axl does try to squeeze into the smallest spot in the tank, between the filter and the heater
They seem to have a fascination with trying to get stuck!
It sounds like your fish might just be being picky if he's not eating. You say he's riding the bubbles up, which is good! I'm glad he's not stressed by the bubbles. When you said airstone, I thought maybe that was what was keeping him hiding. I guess not. :)
Is this a change in behavior or has he been this inactive for as long as you've had him? Some bettas are just lazy! If his behavior changed, was it right after you did something to his surroundings (switch tanks, change out decorations, etc.)?