I had thought danios because, to my knowledge, they were among the peaceful community fish group. I was unaware that, like the minnows, they preferred cooler water temperatures. Well that checks them off my potential fancy list. I don't have any place to move the girls to so I could alter the temperature; they seem pretty happy right at 80 degrees. I just don't know what else to add, bloodfin tetras might fit the bill, but my ph is high about (8.0) and I'm pretty sure tetras like a more neutral to acidic if I remember correctly.