Even fish experts can mis inform. I found mis information here and there in older editions of Axelrod and Louselle publications. There are several thousand species of cichlids and no one in his entire life, even experts, can keep a quarter of them. Experts have to be knowlegeable about every cichlid and inevitably, they have to rely on information from others to write about fish they have never kept or even seen. I bet that none of the cichlid experts have ever kept Blood Parrot because they resent hybrid in the first place, even rumored one.
Since the creator of BP did not reveal the truth, the origin of BP remains a speculation. The weight of evidence, however, convince me that BP is a mutant Red Devel, not a hybrid. BP shares many traits similar to Blue Dampsey--infertile with deformed finage. BD is a confirmed mutant by its creator, though the rumor that it is a hybrid between Dampsey and Tetrcanthus is still floating around. Domesticated fish are full of mutants, just look at ballon Molly, albino and veil finned fish, and the many weird looking fancy goldfish.