Okay, thanks for the info. Atleast the Kenyi is female so if she's holding I know it's not pure.
Also how long does the spawning process usually take. I know they are hareem(sp) breeders and do not form pairs like other cichlids. I mean is it a multi day process or is it something would it could start and finish within an hour without showing any clues before or after that time frame?
The actual spawning takes place within an hour maybe, the only times I've seen it they were interrupted numerous times by the other fish - especially the cats! The shimmying/hole digging/aggression is normally through the roof the day around the spawn. If you watch them carefully, you'll see the egg tube drop on the female the day before. It's not always that obvious.
Although I've never seen it, I've heard that a female can have a few eggs fertilized by male A and a few eggs fertilized by male B. So if you keep species that easily cross, you'd have to witness the entire spawn (sometimes over 2 hours) to be sure the fry are what you think they are.
You have to be careful with any single males in a tank with other species breeding groups. Especially ones that are more dominant / aggressive (like your Melanochromis).