Bettas dont live in rice field all year they live in puddles during 75 percent of their lives. Mostly peoples foot prints theyr breath air like people. If you dant hav filtration put a live plant in their. It will do them good. They do need some degree of heating but i have been keepign bettas for years with no heaters. They do good mostly with tetras that dont nip fins. A 5 gallon community tank just isnt the same without a betta.
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