When I redid my tank about 2 weeks ago to remove some things that my mother finally admitted were dying all of my fish were fine. At the start of last week I noticed one of my cories not doing its normal thing which is just hanging out with the other 2 cories in the tank that and my snail was eating it. I removed the one that was now pronounced dead but i looked it over to see if anything i could see was wrong and all i saw was white patches that were furry. I was like ok.... well I haven't been seeing much of my cories since they lost that one but today i saw one of them and that one only. It is having trouble swimming and it too has that white patches all over it that are furry. I am going to remove him and put him in a kritter keeper by itself and go find the other cory that i have looked all over the tank without going in it to find it and i can't find it for anything. Is this ich because my betta is starting to have little white patches on his head but then again he has been rubbing himself on a new decoration in the tank.