Well one of my smaller loaches just died. I'm actually pretty saddened over it as he was perfectly fine before the change. I checked my water and everything is the same as before the change. Safe level of nitrates, 0 nitrites, and 0 ammonia, no chlorine, stable ph and so forth.
Only thing I can think of is that I accidentally caught him between the tank and the frame of the net while moving him to a bucket. I suppose I may have Injured him somehow. He was acting odd right off the bat once he was back in the tank, just sitting on a rock and showing no activity.
Today the same thing but periodically would fall over on his side and struggle a bit to right himself. His gills were also moving very rapidly. This was when I knew he was on the way out. A couple hours later he left us.
So sad...
All others are doing fine.