It's considered rude to the original poster to ask your own unrelated questions in their thread. You are new here, so I am just letting you know for your own benefit, that people don't like when you do this. You just did it to multiple threads, make your own thread and you will get some answers.
Hi there great choice with the firemouth cichlids. I breed a group few years back used Buenos Aires tetras as dithers. Worked really well long as u keep the tetras in group of 7+ to deter nipping. Hope you enjoy the FM