Makes you wonder
A few days ago i was at the store where i bought my Threadfin Rainbowfish to check if they still had some for me to buy, now the interesting part, the aquarium where they were in, were not in a good condition, there were several dead fish and the ones still alive did not look too good, looked like a fungus attack or something like that.
This makes me wonder if i just pushed them over the edge by cleaning, but that they probably already were infected and in a non good shape.