There are some very impressive people on this forum who really know their cichlids...I will be impressed still if you get a solid ID on these. To be certain what they are you will need to let them grow out or at least settle into the new tank. They are from malawi and are NOT mbuna. I am guessing they are a peacock and with peacocks the females (or juveniles) are extremely difficult to tell apart from other peacocks. I would wait until you start to see some color.