It is pretty hard to sex keyholes as juveniles. I would just get two and not worry about it too much.
With the bolivians you want m<=f if possible. However, my experience with these fish when in a group is that they will establish a pecking order and do fine. You get into trouble when there is 3 or less fish, especially 2m/1f.
I would get more tetras if it was me. Bigger shoals are so much more fun to watch.
With the bolivians you want m<=f if possible. However, my experience with these fish when in a group is that they will establish a pecking order and do fine. You get into trouble when there is 3 or less fish, especially 2m/1f.
I would get more tetras if it was me. Bigger shoals are so much more fun to watch.