I have 2 Pajama Cardinalfishes who have this white fungus coming out of their mouth. There are 5 of them in the tank, but only 2 have this issue. Their fins are also a little shredded. I don't know if this is from fighting or if this is a disease. PH, nitrates, ammonia are all at normal level and the tank is sitting at 78 degrees. I have posted some pictures, one of each fish. Please if anyone can tell what this is, if it is catching to other fish and any other information. I have a med tank set up, I just dont know if pulling them will stress them out so much that they die. Thanks in advance.