I have about 8 I picked up at the LFS, a few grew big fast, some still about an inch. 1 breeding pair with the same red female. First spawn failed, looks like the eggs got done in by the crayfish that was in there (now removed) or the CAE (can't catch him). Been waiting patiently for the next round of spawning. As for their tank mates, a few have out grown the convicts that are in there with them, and seem more territorial than out right aggression. I also notice the smaller ones tend to school. The breeding pair have 1 side of the tank as theirs and nothing can go near them without getting chased away.