International Journal of Aquaculture, 2026, Vol.16, No.2, 111-124 http://www.aquapublisher.com/index.php/ija 123 4 Conclusion The analysis demonstrates that rising temperatures and inconsistent rainfall have shortened rainy seasons, reduced river flows, and intensified ecological stress in Ilaje LGA. These climatic shifts diminish dissolved oxygen, disrupt breeding cycles, and lower fish productivity, thereby undermining artisanal fisheries and livelihoods. Survey evidence confirms hydrological parameters as critical determinants of catch volumes. Without adaptive management, ecosystem conservation, and livelihood diversification, climate variability will continue to compromise fisheries sustainability, exacerbate poverty, and threaten socio-economic resilience in Ilaje’s coastal communities. 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