Cartesian coordinates of 18 landmarks; genotypes for 6 microsatellite markers: UNH130 (Lee and Kocher, 1996), Pzep2, Pzep3 (van Oppen et al., 1997), UME003, UME002 (Parker and Kornfield, 1996) and TmoM27 (Zardoya et al., 1996);723 individuals of two color morphs and two species of the genus Tropheus, collected from eight locations at the eastern coast of Lake Tanganyik