I have my 5G divided once for 2 bettas down in my kitchen and then I have my 10 G tank divided twice for 3 bettas 2 males on the ends and a female in the middle, I had it originally divided 3 times but 2 of the 4 bettas died within the 1st month I think they must have been stressed, one bit his own tail. These 3 have been living together for a while the boys seem really happy on the ends. I don't have any pics at the moment but hopefully I'll be able to get some up.