Hello, This is my first post on this site and I'm hoping to get some help. I have a Dalmatian molly, have had her for about 8 months in a 10 gallon tank with a Betta, 3 other mollies and 3 snails. About 4 months ago 1 molly died of dropsy. About a month ago my Dalmatian had fungus on her left side. I treated the tank for fungus and it cleared right up! However... a couple days ago my males started acting overly aggressive and I had to add more females to settle them down. One of the new females died within 24 hours. I checked my levels with a dip stick and they were fine. Then the following day another one of my original male mollies died. Now my Betta is not swimming and staying at the bottom of the tank and the Dalmation that had the fungus infection has a few scales lifted in the same area as the infection was and the gills aren't working on that side. Her color has also changed and she is constantly showing me the sore. There is no redness to the gills, no white spots, no cotton areas. I have googled my heart out on this but haven't seen anything similar and not sure if all of my fish are connected. I'm running a Tetra Life Gaurd cycle right now. Any suggestions?