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The Lake Edward system, consisting of the drainage systems of Lakes Edward and George, contains 70-150 endemic and closely-related cichlid species of Haplochromis Hilgendorf, 1888, of which only 32 have been formally described. In this study, a systematic revision was performed on the generalised and lacustrine haplochromine cichlids of the Lake Edward system with an Astatotilapia sensu Greenwood (1979, 1980) morphology, large lips and an intermediate gap between the inner and outer series of oral teeth. Seven distinct species were delineated, three of which were already known to science, i.e., H. elegans, H. aeneocolor and H. akika, while four species remain hitherto undescribed, i.e., H. sp. ‘longus’, H. sp. ‘caelesti’, H. sp. ‘brevis’, and H. sp. ‘solidus’. Haplochromis nubilus, a generalist species from Lake Victoria, was also reported from the Lake Edward system. However, in this study, no evidence was found that this species occurs in the Lake Edward system. The main differences between the investigated species in this study were found in head measurements, dental characteristics and colour patterns. Two species, H. elegans and H. sp. 'solidus', had a relatively short lower jaw and a relatively long premaxillary pedicel, while H. sp. ‘longus’, H. sp. ‘caelesti’, H. sp.’brevis’, H. aeneocolor, H. akika, H. limax and H. nubilus had a relatively long lower jaw and a relatively short premaxillary pedicel. However, H. aeneocolor and H. akika, could not be properly distinguished. Furthermore, the outer oral teeth of H. aeneocolor resembled that of H. limax, an algae scraper. To clarify the delineation of these species, additional research is required.