by Walter Soestbergen » Sat Jan 31, 2004 12:40 pm
Yes you can cross breed any discus to any other discus regardless of blood lines, wild or domestic. What you suggest is called line breeding. I wouldnt advise doing it for more than 2 generations ( after that I like to "out cross" to bring in new genes to keep my "line" genetically healthy ).
I'm myself, there are already enough others.