How long has she been holding? She could be holding unfertilized eggs that will get spit out soon.
She is holding one day so far. The dominant male is the Auratus. I did notice that the female chased the young Lab around the tank for the last couple days. He was added to the tank AFTER the female was there so maybe that had something to do with the chasing. How long does it take for the eggs to hatch and the fry done with the yok sack if they are fertilized?toume said:Mbuna males do not guard or "help" holding females in any way as some other species may (esp. many CA/SA cichlids).
The father could be the young lab, but most likely it's the dominant male in your tank (if he doesn't have enough females within his own species (though he might either way), he will venture out into others and hybridize).
I'd say the auratus is a likely father (as he is Mbuna). Cichlids from other lakes are less likely, but still possible. Just because the auratus is chasing away other fish doesn't mean he's the father though. All males tend to chase/abuse holding females.
If she swallows the eggs in a few days, they were unfertilized (or because she's new to holding and does so mistakenly or because of stress).