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¹ Flat Bush, Manukau, Auckland, New Zealand
² 09 BP 164 Cotonou, Bénin
³ CIBM, viale N. Sauro 4, 57128 Livorno, Italy DOI : 10.4194/1303-2712-v17_1_24 Viewed : 4020 - Downloaded : 3507 Relationships between fish weight and length, otolith length and fish length, and otolith weight and length were analysed in two cichlid fish species, Coptodonguineensis(Günther, 1862) and SarotherodonmelanotheronRüppell, 1852 (Perciformes, Cichlidae), collected in two lakes in southern Benin (western Africa). The analysis of covariance (ANCOVA) was used to detect differences in the relationships between the specimens of the two species collected in the two lakes.To the authors’ best knowledge, this study represents the first reference available on morphometric relationships for C. guineensis and S. melanotheron in the investigated area. Keywords : Guinean tilapia, blackchin tilapia, morphometric relationships, Benin, western Africa