Two of my Pygmy Corydoras have lost their ability to maintain buoyancy. One rests on his side, the other floats with the current in the tank, unable to resist.
Should I just euthanize them? They've been like this for months, and I don't think it's worth living like that. They're both perfectly healthy otherwise, just totally helpless.
Water parameters are a little stressed right now, so I do water changes every other day. I have some antibiotic I could try, but they've been like this so long I figure it must be permanent.