Speciation, DNA and Tropheus

" In August 1992 Sturmbauer & Meyer published an article in which they claimed to have deduced a phylogenetic tree (a kind of pedigree of populations and species) for Tropheus by comparing the sequence of two small pieces of the cichlids' DNA. Although it has received considerable attention in the scientific as well as in the aquaristic press, opinions regarding the acceptability of their findings differ "