Very similar to this I edited from a book.
Lake Malawi, made up of mostly haplochromines,{Mbuna, Utaka...} in fact genetic study revealed this stems back to a single lineage. The other few stem back to Tilapiines. Other scientists suggest, the single lineage could be wrong, but all are still haps.
Lake Tangy has 12 different lineages or tribes. 8 of those are found exclusively in Lake Tangy. Haplochromines only make up about 5% of species.
Lake Victoria has 2 tribes, one tilapiines, the other haplochromines. Now Victoria has as many as 500 different species in just 12400 years. The DNA of 14 species of 9 endemic genera was analyzed, the variation among the species was less than within our own species, Homo sapiens.
http://www.fnzas.org.nz/fishroom/cichlids-look-nearly-identical-vt19858.html
Frenchy