Metynnis fasciatus? Anyone have any?

I know they aren't piranha, just a distant cousin, but does anyone have any of the striped silver dollars?

I've got a spawning group of Metynnis argenteus, does anyone have experience keeping fasciatus any length of time to see if they spawn in a similar fashion to the argenteus?

Does anyone know a better place to ask about them-if this is not the right spot?