The group of large five-spotted Hemichromis species from West Africa and Lower Guinea was revised using an integrative approach combining morphometry (measurements, meristics and colour patterns) and genetics (cytochrome b gene). Specimens from 100 populations were sorted into three main groups on the basis of morphological criteria. Samples from Lake Bosumtwi clustered together with others from West Africa in a large well-supported clade (bootstrap values and posterior probabilities: 98/96/100), both in morphometric and genetic analyses, raising again the hypothesis of synonymy of H. frempongi with H. fasciatus. Samples from southern Lower Guinea, including the type locality (Gabon) of H. elongatus, constituted a second weakly resolved cluster (64/38/51), resulting from a potential admixture of populations of diverse origins which share common morphological traits. Populations from northern Lower Guinea (Atlantic coastal basins) and the upper Chad basin in Cameroon formed a third strongly supported clade (99/100/100), which corresponds to a new species, Hemichromis camerounensis sp. nov., herein described.

该组大片五看准Hemichromis从西非几内亚下使用品种的综合办法，结合形态（测量，meristics和彩色图案）和遗传学（细胞色素b基因）进行了修订。根据形态学标准，将100个种群的标本分为三大类。来自Bosumtwi湖的样品与来自西非的其他样品一起聚集在形态分析和基因分析中的大型有良好支撑的分支中（引导值和后验概率：98/96/100），再次提出了H. frempongi与fasciatus。来自下几内亚南部的样本，包括伸长的嗜血杆菌的类型局部性（加蓬）构成第二个弱分辨簇（64/38/51），这是由于具有共同形态特征的不同来源的种群的潜在混杂所致。来自几内亚下北部（大西洋沿岸盆地）和喀麦隆上乍得盆地的种群形成了第三个有力支撑的进化枝（99/100/100），对应于一个新物种，Hemchromis camerounensis sp。nov。，此处描述。