Update - seems that everything has settled down. I've yet to see any serious aggression from any of the fish, including the betta. Sometimes he will swim in the same direction of the endlers, but there are no signs of alarm or actual chases going on.
If anything pops up I'll mention it. In the meantime, thanks all for your help (especially marieuk; that re-arrangment plan worked a charm!)
If anything pops up I'll mention it. In the meantime, thanks all for your help (especially marieuk; that re-arrangment plan worked a charm!)
