I've found some Bluespots too be more aggressive. All the ones I've had have been more so then blackbandeds but less then bandeds. But most aggression is directed at there own.
Mike Lucas
It is all relative. I can't see a bluespot killing convicts. I also keep convicts (I know, blasphemy!) and I can't imagine what would happen if I threw in a bluespot in with them. They would eat him alive.