I would have said Yours Was a A. Stahlsbergi, i wasn't aware of Any White rivulatus variant
You may be correct, I'm not an expert.
I'm basing my comment on information i absorbed from Guapote Mel's YouTube videos. He talks about Stahlsbergi being the "True" green terror which comes from Peru, where as Rivulatus comes from Equador (I may have that backwards)
Anyways, I've always thought that although they look very similar, the Stahlsbergi looks different enough to say there is a difference. Obviously the white seam, but different facial look and the more prominent white bars towards the rear of the body, but a darker base color and not as "shiny" for lack of a better word.
You may very well be right, but I assumed that there was both white and gold seamed Rivulatus, but the "true" green terror was only white seamed...
Again, I could be very wrong
If you or anyone has different information I would love to hear about it