Two weeks ago I lost one of my females... She never seemed very healthy to begin with and I found her half eaten a few days later at the bottom of my tank.
Gave the tank a 75% water change
Few days ago I noticed 2/5 of my females to be very bloated and hardly swimming.
I gave them daphnia and hoped it would get better.
One of my normal looking fish passed. She was floating in the top corner of my tank.
2/4 of my betta's are still extremely bloated.
Today I came home, my smallest female who looked fine last night, was stuck to the filter tube. Im not sure if this is what killed her or not.
2/3 of my bettas are very bloated, and hardly swimming.
The healthy betta I will be removing and putting into another 2 gallon tank until I isolate this issue.