I got a few zebra danios a week ago and this morning I noticed this white on the top of one of the danios (sorry for the bad pic). I came home today and found what I assume to be this guy dead but his body was too eaten up to tell. The shrimp must have got to him. Another fish from that batch is hanging out at the bottom with something similar. The other I can't seem to find. My corys tonight ignored there food and are look like they're trying to scratch themselves on the glass and possibly on the plants but they love to be on plants so it's hard to tell. I started treating with Paracleanse tonight so hopefully it will solve the problem. Anything else I could be doing or any other thoughts on what it might be if it's not parasites? I also attached a video that shows another angle of it.