I cant figure out why my rainbowfish are dying. I just lost two of my 3 rainbowfish within 3 or 4 days of each other. My tank is a 55 gallon community with 12 glofish, 3 otos, 2 denison barbs, and a bushy nose pleco. I have the topfin 75 filter it came with and two Aquaclear 30's and the heater it came with. Everthing is going great, i have lots of malaysian driftwood and a sand substrate. I checked my parameters and everything is spot on.
So a few days ago my boesemani rainbowfish was swimming all crazy and he would go upside down then swim crooked then get stuck between some wood or on the bottom so i went ahead and got him out. Since then i noticed one of my two australians was losing color and not eating and just last night i noticed he was swimming all crazy to and got stuck on the bottom. I had to take him out. My last and biggest australian rainbow seems to be doing fine. He was kind of starting to be a slight bully towards the other two but i dont think enough to kill them. All other fish are fine as of now. Was is killing my fish?
So a few days ago my boesemani rainbowfish was swimming all crazy and he would go upside down then swim crooked then get stuck between some wood or on the bottom so i went ahead and got him out. Since then i noticed one of my two australians was losing color and not eating and just last night i noticed he was swimming all crazy to and got stuck on the bottom. I had to take him out. My last and biggest australian rainbow seems to be doing fine. He was kind of starting to be a slight bully towards the other two but i dont think enough to kill them. All other fish are fine as of now. Was is killing my fish?