Would it be safe to put three female and one male betta in a container pond over the summer? I've kept females together, but never females + a male. Is this feasible in a 20gallon(ish) container, with lots of floating plants? Would they breed on their own? I have a beautiful pair of half moon bettas with really unique colors (and two normal female bettas) so I'd love to see if the'd do it on their own before I try the tradtional way.