Comparing the ones in the pick with the size of the gravel, shows they are young, and trying to tell Vieja species at that size is nearly impossible, because many "Vieja" look so similar when at that age. Unless you got them from a knowledgable and trusted source, they could be hybrids, where 1 parent may have been a back belt, and 1 not.
If it was from a LFS, most employees can't tell the difference between a black belt and a bluegill, so you need to take any name they were sold under these days with a grain of salt.
Your best bet will be to wait a few months, when actual distinguishing traits start to appear, then post some ver clear shots.