International Journal of Aquaculture, 2025, Vol.15, No.6, 275-286 http://www.aquapublisher.com/index.php/ija 282 and fitness. These patterns emphasize the importance of using morphometric indicators as reliable bioindicators of aquatic ecosystem health in polluted coastal habitats. Figure 1 Condition factor (K) of E. fimbriata over the months and across the stations Figure 2 Condition factor (K) of C. macropogon over the months and across the stations The growth of Ethmalosa fimbriata and Chrysichthys macropogon varied notably across stations in Ilaje. E. fimbriata ranged from 27.25 g at Asumogha to 184.90 g at Idiogba, with lengths spanning 16.72 cm~20.20 cm. C. macropogon showed weights from 65.28 g at Asumogha to 94.94 g at Bijimi, and lengths of 16.82 cm~19.19 cm. These differences highlight habitat quality, food supply, and fishing pressure as key growth determinants (Froese, 2006). 3.4 Length–weight relationship and growth pattern The length–weight relationship (LWR) of Ethmalosa fimbriata and Chrysichthys macropogon showed marked allometric growth, with E. fimbriata exhibiting mostly negative allometry (b < 3), while C. macropogon displayed mixed isometric and positive allometry. Variations in the constant (a) and growth patterns across stations highlight spatial and seasonal differences influenced by feeding, habitat quality, and fishing pressure. Higher b-values at Bijimi and Idiogba suggest favorable growth conditions, whereas lower values at Asumogha indicate possible stress or limited resources (Froese, 2006). 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 AYETORO BIJIMI IDIOGBA ASUMOGHA APRIL MAY JUNE JULY 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 AYETORO BIJIMI IDIOGBA ASUMOGHA APRIL MAY JUNE JULY
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