What is the question? Yes the bp are a different species than bv, and yes, cherry shrimp made red rili shrimp which led to blue rili which let to them breeding the red mostly out to make bv, although now after breeding for a while, people are seeing the red coming back now and again.
20g platy, , 2 x 10g shrimp, 3 x 20g shrimp, 7.5g shrimp and 1 great dane/mastiff puppy.
Blue Velvets were derived from Red Rili. They still have reds pop out in their offspring but 99% of the red dissipates after the juvies reach adulthood. Here's a recent thread I made regarding my offspring Blue Velvets with red headgear. Check it out if you haven't yet: My Blue Velvet Shrimp. Red headgear offspring!!