My brother's betta hasn't eaten
since we brought him home, about 6 days ago. He's been staying at the top of the tank, in a corner since then. But this morning, we found him at the bottom of the tank, upside down
! His gills look inflamed, and he seems to have trouble breathing. He is in a filtered 2 1/2 gallon tank, with a heater, keeping it around 79 degrees. Is he going to die? Or is he just really sick? I've read something about Swim Bladder disorder... Could he have that?