That is platy poop.Bacterial her fins look abit white on the edges as well.
What that pink ribbon thing handing down or is it me lol.
Heh, thanks.I have the same thing on my guppy's pectoral fin, he's had it for a while now and it doesn't seem to be of any danger, so I've ignored it. But I'll let you know if he ends up dieing though.