I was hoping that someone would post a miracle cure by now!
If it was a bladder issue, wouldn't they not be able to swim right?
But my tancho sanke does this same thing... last weekend I took several scrapes but I couldn't find a single bug. Gills looked fine,
I couldn't see anything lodged in them, yet he still does it several times a day/night and none of the other 5 do it. I added a couple
of 6" air stones w/a medo 45 that boils the water all night to see if it maybe was low oxygen issue. It's only been a day, but doesn't seem
to have made any difference.
He doesn't appear in any distress at all, eats fine, schools with the other fish, but just gulps air quite often.
Just thought I'd admit to being part of the club.