The question still is not clear. onyx perc+ black occ.= sanjays black photon. reg occ+black occ=brown clown. im guessing when you say orange and black marbled you are talking about onyx clowns which are really just a variation on true percs generally from papua new guinea. if you breed onyx with onyx you get onyx usually. you may not get all that nice black, but fish with different characteristics are selectively bred so there is a higher instance of the unusual desirable trait. a pair of mis bars will be more likely to produce mis bars and eventually, after lots of breeding, sometimes inbreeding, you get something like the naked clowns.