Here, try this one, it shows several pics of examples of mooning(just at the top where the stripe meets the dorsal and split stripes. Hope this helps. If you look closely at this burundi it is supposed to only have six stripes (5 on body and 1 eyestripe) it has six on one side (almost had seven !) and seven on the other. Mooning and striping are commonly found with poor genetics like breeding with siblings and offspring back to parents etc... But not always, there are many reports of split stripes and mooning in wild caught fish. If you have a fish with that condition there is no guarentee that it will pass it on to later generations but it is likely so people try to not breed those fish, just keep them as wet pets. Some minor mooning where there is pigment but its just not as dark as the rest of the stripe can often be reduced or reversed with a really good diet and feeding program this usually needs done when the fish is a small juvie , after growth it is hard or impossiable to change.
Pearling is usually found on the head in the forehead area (around the hump/mask) . Pearling is when the center of scales are blue instead of black, so there would be a black ring around the edge of the scale and then blue in the center. Mpimbwe are an example of fronts that usually have pearling, there are others like the zaires such as moba etc... Here is a link to some pics of frontosa . The pics of the mpimbwe and zaire, and zambian if i remember show pearling. I think the zaire and Tanzanian mpimbwe in the pics had very good examples of pearling if i remember right :