Oluwasola Busuyi Ojo

Author    Correspondence author
International Journal of Aquaculture, 2025, Vol. 15, No.   
Received: 01 Jan., 1970    Accepted: 01 Jan., 1970    Published: 09 Dec., 2025

This research evaluated how heavy metals influenced the Length – Weight Relationship (LWR) and the condition factor of E. fimbriata and C. macropogon. Gillnets of different mesh sizes 0.6cm, 1.0cm, 2.0cm, 3.0cm and 4.0cm served to catch fish from four sites for four months. The fishes were classified into four categories in accordance with their weight(g) which ranges between 0 – 50g (Group A), 51 – 100g (Group B), 101 – 150g (Group C) and 151 – 200g (Group D). The results showed that the mean total length(cm) of E. fimbriata varied between 20.20±4.94cm (Idiogba) to 16.72±4.40cm (Bijimi) and weight(g) varied between 92.78±52.31g (Idiogba) to 62.18±34.30 (Bijimi). C. macropogon total length(cm) varied between 19.19±6.53cm (Idiogba) to 16.82±4.97cm (Asumogha) and weight(g) varied between 94.94±57.49g (Bijimi) to 65.28±41.28g (Asumogha). The condition factor obtained for the two species in this study falls within the range (0.60-1.00). The results suggested that the species otherwise managed to have a good K value. E fimbriata exhibited negative allometric growth, while C. macropogon showed allometric growth. The weight(g) analysis revealed two main groups of heavy metals in the fish: Cu and Cd, with a strong correlation, and Mn and Cd with a weak inverse association. Both species had accumulated heavy metals within their tissues, reflecting pollution within the study area. Keyword: Condition factor, Length(cm)-weight(g), Allometric, Correlation, C. macropogon, E. fimbrita