No, this willnot work for a couple of reasons. First, the Scarlet Badis is not a community fish in the sense that it needs carefully choosen tankmates and active swimming danios are not they. And the guppies too. Plus the water difference, Badis is very soft water.Any chance I could put the Dario2, (Scarlet Badis), and Lollypop, my (Glo-Zebra)Danio together with a couple of male guppies in the 5g? I jave really been admiring guppies lately. I would consider going for those as far as getting more fish.
In the photos in post #1...are the Scarlet Badis two different fish or the same one? The first photo shows this fish rather beaten up.