Look people (Kribs excluded) DO YOUR HOMEWORK before posting IDs on fish don't just hop around threads going OH I THINK ITS THAT! RESEARCH IT FIRST AND GET A POSITIVE ID BEFORE LETTING YOUR FINGERS WORK ON THAT KEYBOARD. You are helping nothing by giving out opinions without proper investigation into the matter. Most of you do not do that, don't bother posting unless you can back up your suggestions with some solid evidence.
Fish breeder, if you had a Cray in with them, or any other fish for that matter, its no wonder that happend, or vice versa and I don't feel bad for ya.
Now, Nurb, those are awesome pictures, like Kribs said, great for helping those of us who are willing to do a little investigation to ID them correctly.
The first one, while easily could be a hybrid, I think may be a
Dimidiochromis strigatus the blue color could be a number of things from lighting to food, or age, but all the other characteristics are quite similar.
http://www.cichlidlovers.com/d-strigatus.jpg
The gill plate shape, white stripe along the dorsal fin, the red patch just behind the gill plates (yes yours has it, the blue drowns it out a bit, but you can see it in the first picture), the orange anal fin as well.
Here is a link to Malawi Mayhem about them. You will need a much larger tank for that species as with most Dimidiochromis species.
http://www.malawimayhem.com/profile_show.php?id=74
The second one could very possibly be a
Maylandia callainos as the link shows (the pearl morph),
http://www.israquarium.co.il/FishPhoto/Metriaclima callainos.jpg
However, it could also just as easily be a hybrid within the Maylandia family, in which case IDing it would prove nearly impossible unless it was a known hybrid.