I have 2 BP and they dont fight, they are always together and follow each other all the time. I also keep cories with them and they dont even look at the cories.
I still think they're super adorable, and their temperment would make possibly the greatest fish I can ever hope to own.
But my main concern is that the people who breed them are also the same people who tattoo gawdy floral patterns onto them, inject them with dye, cut off tail to create "heart-shapes"...etc. Also, that because of the really cute mouth and spine defect, which impacts their digestive system and bladders, they can't expect to live as long or as healthily as normal cichlids.
please scroll to the very endI have never seen artificially tattooed cichlids.

please scroll to the very end
http://cichlidresearch.com/parrot.html
=(
perhaps our science will improve and one day we will have healthy, happy parrots for sale everywhere~
The only trait I hated about the BP was their extreme shyness when new which seem to last for months. But I discovered that by initially placing two large orange comets in the tank really help brake the BP's shyness thinking that the large comets where unafraid BP's, after-which about 2 weeks I removed the orange comets.