Chromidotilapia melaniae and C. nana, two new cichlid species (Perciformes, Cichlidae) from Gabon, Central Africa. Author Anton Lamboj text Zootaxa 2003 143 1 15 http://www.zoobank.org/urn:lsid:zoobank.org:pub:99628E1E-3579-46A2-9351-95E91323DBC2 journal article z00143p001 99628E1E-3579-46A2-9351-95E91323DBC2 [[ Chromidotilapia nana ]] Considering it´s relatively slender body and the low number of gill rakers on the lower limb of the first branchial arch, C. nana (9-10 rakers) is similar to C. mrac (8-9 rakers), but differs from the latter species in a poorly developed sexual dimorphism and dichromatism as well as in breeding behaviour (ovophilic in the former vs. larvophilic mouthbrooder in the latter). However, both exhibit a characteristic pattern of two rows of dark spots and blotches on the flanks, a feature which is not evident in other species within the genus.