Coming straight out of my Konings book, 4th edtition "Mylochromis lateristriga grows to a maximum length of abouth 23cm and is encountered infrequently in the southern part of the lake. It digs into the sand and filters any palatable items (mainly crustaceans and insect larvae) from it.
It goes on to say that M Lateristriga appears to be restricted to areas with vegetation as it was almost extripated from Maleri islands through extensive uses of beach seines, which uprroted and moved almost all aquatic plants around the islands. Recently the area has come under protection of a private group overseeing the activites around the islands, and the plants and the cichlids semm to be slowly returning to their original state. " Konings 4th edition pg 292
Btw beautiful fish!!
I hope that helped some..