I know the owner in the Philly Chinatown LFS got his BP, Flowerhorn, Green Terror and fancy Goldfish from Asia. He did not import himself but he bought them from another wholeseller in New York that imported them directly from Asia and redistributed them elsewhere. BP is an Asian creation and is appreciated more in the east than in the west as a Fung Shui or good luck fish. If you do a web search for Dragon Fish or Arrowana, you will come across Aisan wholesellers on BP along with Flowerhorn and arrowanas. There are BP produced in Florida fish farms but they are of low quality. BPs are still produced in large quantity in the East though it has declined somewhat due to replacement by new favorite Flowerhorn. The newest BPs from Asia, known as King Kong BP or other fancy names, do not carry the deformed mouth but look more like regular Red Devel except for a shorter body (with crooked backbone?). They have very intense red and some have marble white and red pattern. They are very showy fish and I have a few pictures of them in my web site:
"http://www.geocities.com/bluespeacock/parrot1.jpg"
"http://www.geocities.com/bluespeacock/parrot2.jpg"
"http://www.geocities.com/bluespeacock/parrot3.jpg"
As for Blue Dempsy, they are South American creation and Jeff Rapp is the North America distributor. I don't know if Jeff breed them himself or bought them from the breeder in South America. Jeff has posted about BD and cited the article from the BD creator on how he developed the BD strain from mutation. So there is no secret or controversy now for BD. BP is a Taiwanese creation but the secret of its creation was never disclosed.