“…In addition, some species of Cichlidae, principally the tilapiines, are very important for aquaculture and fisheries, and the Nile tilapia, Oreochromis niloticus , represents one of the most widely farmed freshwater fish in the world [FAO, 2006]. Although the genomes of several African cichlid species will soon be sequenced [proposal by The International Cichlid Genome Consortium, 2006], knowledge of cichlid genomes is rather preliminary, and far behind pufferfish (Tetraodon nigroviridis) [Jaillon et al, 2004], zebrafish (Danio rerio) [Meli et al, 2008] and medaka (Oryzias latipes) [Kasahara et al, 2007]. So it is therefore of particular interest to investigate the chromosome structure of some representative taxa of the Cichlidae clade.…”