Top left picture was taken with a flash                              Picture on top right shows the fish when he is stressed

Quite a few years ago I bought four of these cichlids from the LFS at a very small size that were labeled as Pseudotropheus zebra.  As they grew it became obvious by their body shape and their smaller size [maxed out at about 4" (10 cm)] that  they were not of the Mylandia/Metriaclima genus.  I posted a picture of them in one of the forums and never ended up with a positive ID.  The best guess is that they are hybrids, with some Cynotilapia in them.  I let them live their life out in a spare 20 gallon tank.