I also would not let any rocks touch in the tank because tropheus will claim all the rocks that touch as theirs. I have moorii and two variants as well, i have one yellow bar and two reds they get along great, all males at that. I also have one duboisii who is female and paired up with the yellow bar moorii. They also seem to get along with the zebras, without any problems except for fights over grazing rocks, which isnt that bad. As for the lamprologus these guys dont get along, you should only have one lamprologus in a tank no matter what size tank or who you have with them they will kill eachother, julies are a better choice as long as you only have a pair they will stick to themselves, you should have no problems