Spot on except that the fish Jeff Rapps imported (and is selling right now) isn't actually the fish that was first described as A. rivulatus.
Just trying to clarify that. The fish that are floating around as "true" green terrors from spawns of the Jeff Rapps fish a few years ago are not, technically speaking, A. rivulatus.
Yes, they were imported under that name in the 70's and Rapps sold them as that and is doing so again right now, but it was discovered that a different fish has precedence to the name A. rivulatus.
It's all in the links I posted. Probably way more info than you wanted, but there ya go.