I have a large well planted female betta sorrority tank. I have only lost 2 females,one no idea the other got egg bound, until last night. My oldest female ripped the face off another girl who sadly did shortly after. She has always been aggressive and may have killed the female Iwho I thought mysteriously died. I immediately sepperated her into one of those stick on spawning tanks. On lifting the lid tofeed her tonight I noticed a large bubble nest. I am now a bit suspicious of another female who has no obvious oviposter and long ventral fins. All my females have come from the same supplier. I only have one other tank set up right now nd that houses my male, my breeding tank is not set up a I have only tri to breed once and it went wrong (inquisitive children). What can I do ?