skin peeling

My weather loach was fine yesterday. Healthy, active, and colorful. I came home and found him pale white, and wrinkly like he's gonna shed his entire skin. He is also lethargic. What is this??? I've read so many forums and haven't found anything like it. Attached are some before & after...

hello! I am so scared and in desperate need of help. My 3 corydoras skin is peeling and they are not eating. One of my albino dojo loaches was floating at the top but he would swim away when I went to net him. I thought they were all dead due to cloudy eyes and lifelessness but when I went to...

Hello, I was given two Gourami's that came from a pretty foul tank.  I placed the bag they were in, in a bucket of fresh water to acclimate to temp.  I wanted them to swim around in quarantine for a bit.  I had a 5 gal bucket half full. When I came back an hour later to take them out of their...