Whether or not BDs will be scientifically proven to be a seperate species over time remains to be seen,i personally believe they are the same just a regional variant collected from Sao felix.However i also believe the name Black diamond is a good one to describe these Leo's which have superior spotting and generally whiter ones also,like i said before,i agree with Shadow on taking a big spot classic over a messy BD,however they are not all messy, there are top grade BDs like there are top examples of all rays,these deservedly fetch more money and are the most striking rays on the planet,unfortunately few of us can afford such quality.