Better than being picked on or get killed by other bettas. There is a reason why they're kept in jars singly.I'll read links to said articles. With that said I'd greatly prefer a "betta community" with a ratio of say 1:4 males to females in a large 125 planted than in a small bowl any day. I am sure all of the Bettas bred and sold in stores waiting in cups would then also have a reduction in life span based on the studies.