Couple of questions about the Apistogramma cacatuoides . . .
What is a 'super red'? is that another way of saying either double red or triple red? Or is it some other red variant?
Do they have a specific substrate requirement, or are they more or less happy in any substrate as long as they have plants and wood and a cave and leaf litter etc? Or do they require sand or a small pebble size for a specific reason?