The estimated growth performance index, φ′ = 2.444 based on length and φ = 0.6833, using weight. The von Bertalanffy exponential growth parameters were estimated as: asymptotic length (L∞) = 13.7 cm TL, growth curvature (K) = 1.48 year-1 and length-at-age zero years, t0 =-0.13 Lo = 2.40 cm TL. Three year classes with mean lengths of 7.4 cm, 11.55 cm and 13.3 cm TL, respectively, were identified. The length-weight relationship of the species indicated isometric growth (b = 3.005 r = 0.9623). The population dynamics of Odaxothrissa mento in the lower Cross River, southeast Nigeria, were obtained from a six month length composition data (4.25-14.75 cm TL mean = 5.91 cm ± 1.02 and 0.71-7.36 g 1.62 g ± 1.24 n = 1012).
