The red blood parrot was first "created" in Taiwan back in the late eighties. Little is known about it outside Taiwan. According to Cher Chan in "Cichlids in Taiwan", it first appeared in 1986. The parents of the hybrid was a mystery back then, now many fish farms in Taiwan can produce it from a male "Cichlasoma citrinellum" (midas cichlid) and a female "Cichliasoma synspilum" (redhead cichlid). The author doubts the purity of the parent stock, though.
According to the author, the hybrid spawns but the eggs fail to hatch or cannot develop normally. (See the Breeding Page for more information on this topic.)
The tone of the author - the editor of the Taiwanese AquaLife magazine - seems to praise the "creation" which is just opposite to what serious aquarium journal editors or authors often do. A comparison is Riehl and Baensch, Aquarien Atlas, p. 636 on Macropodus chinensis x M. opercularis, the author warns the reader to keep away from the hybrid with the phrase "Haende weg von Kreuzungen!" emphasized.