I have decided that I really like fish that live in groups. My tank has a group of the M boesemani, a group of corydoras, and a group of pristella maxillaris.
I also have a golden wonder killifish who is a loner up at the top of the water. She is interesting to watch, but not much for hanging out with others. Also, I have read that she will eat the other smaller fish as she grows, so I am thinking of moving her over to my 20g with the pair of platys and getting some kind of small tetra, perhaps neon tetras.
Will the rainbows try to eat or kill the tetras?