thanks tanked I just took that fish in today I felt sorry for it, I have another problem now and I know it is a big problem they are another mollie that I had in the same tank with the one that died first of all as soon as the one that died started showing signs of illness I put her in the hospital tank. But now the other fish are starting to do the same thing she did when she first got sick . When she first started to get sick they were a big string of white stuff came out of her then the next day she was in a S shape then a couple of days after that she was upside down. my black mollie has the big string of poop coming out of her this evening someone please help me out because if I dont find out what this is I will lose my hole tank of fish please les or cm or anyone who could tell me what this is so I can get it took care of now before I lose anymore of my fish by the way all my readings are ok the nitrates are 5.0 but the other 2 are 0 could this be a parasite of some kind mabey internal like a tape worm I am in dire straights,
