I know from working with importing world that when Malawis were super hot, you could have a bay with villages a, b, c ringing it. So you'd get lists with "unbelievable new fish, Pseudotropheus A!!!". The the next list, B, then C.... I hope the Malawi people have sorted that out. The Apistogramma sellers in SA used to do something similar.
With my beloved killies, we also have locations, but they were pinned to the fish by serious hobbyists or researcher, and weren't marketing tricks.
This is the last Rift Lake fish I kept, marunguensis. The social structure was a spectacle - each successive brood took over aspects of care of the next. I had excavators, nest cleaners, periphery guards - it was a fish village adapted to a conflict zone. The problem was
how many I ended up with, since
they were so efficient.
The fin tips that look ivory were actually blue.