I have seen them only at businesses and schools out door mats that are made out of stringy black tire looking material from what I have seen they look like they are better than anything else for wiping muddy feet off on. I'm not talking about flat mat tar rugs, what I'm thinking of looks kind of...
I purchesed 5 Black Moore goldfish for my 72g tank on Sunday (3 days ago).
I noticed one of the fish was acting a bit sick so I kept an eye on it. Last night I noticed that there was a bit of white stuff around the side and back fin... but not much.
Today The fins that had the White stuff on...