Female bettas can be kept together although it is not advised for beginners or anyone not good with recognizing betta behavior. Ā If you do keep females together in a sorority setting like Giz is doing here, lots and lots of plants and other things to block line of sight is mandatory. Ā As well as lots of hiding places like caves. Ā A 10 gallon tank is bare minimum size with no less than 5 females together to minimize aggression. Ā It is also easier to use sisters from a breeder since most are kept in a sorority setting growing out which helps in some instances with aggression. Ā
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I get most of my bettas from other breeders. Ā Not sure if the plant question was directed at me or Giz but I tend to use a lot of different plants that do not require high lighting or CO2. Ā Several hygrophilia species, swords, moss, floaters, vallisineria, crypts, ludwigia, and apontagens are some of the different plants that I use. Ā I sometimes pick up plants from my LFS but most times I order plants online.