Authors : Ahmed, M. A.; Ikenga, E. E.; Oyibo, A. A.; Evien, C. O.

Volume/Issue : Volume 11 - 2026, Issue 2 - February

Google Scholar : https://tinyurl.com/4zrew4en

Scribd : https://tinyurl.com/6z8syfrf

DOI : https://doi.org/10.38124/ijisrt/26feb758

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Abstract : This research evaluated the growth dynamics and economic relevance of major fish species harvested from the Cable–Ogbeogonogo section of the River Niger in Asaba, Delta State, Nigeria. Morphometric measurements were obtained from sampled fish specimens, while structured questionnaires were administered to 200 stakeholders engaged in fishing and fish marketing. The analysis of length–weight relationships showed that Tilapia zillii exhibited near-isometric growth (b = 3.08), whereas Clarias macromystax demonstrated positive allometric growth (b = 3.21). Condition factor values above unity indicated that the populations were physiologically stable within the study environment. An income analysis revealed higher average monthly earnings among active fishers (₦124,500) compared to fish vendors (₦98,300). Despite viable returns, operational challenges such as fuel costs and inadequate cold storage affect profitability. The findings provide empirical data useful for fisheries monitoring and sustainable resource management in the Lower Niger Basin.

References :

1. Alam, M. M., Rahman, M. T. and Parween, S. (2014). Morphometric characters and condition factors of five Freshwater fishes from Pagla river of Bangladesh. International Journal of Aquatic Biology, 2(1): 14-19.
2. Babatunde David Olaosebikan and Dr. Aminu Raji (2004): Field guide to Nigeria freshwater fishes published by Federal College of Freshwwater Fisheries Technology P.M.B. 1500New Bussa, Niger State, Nigeria 26-76pp.
3. FAO (2018). The State of World Fisheries and Aquaculture 2018 - Meeting the Sustainable Development Goals. Rome. 210pp.
4. Froese, R. (2006). Cube law, condition factor and weight-length relationships, history, meta-analysis and commendations. J. Appl. Ich. 22: 41-253.
5. Gebremedhin, S., Brunnel, S., Getahun, A., Anteneh, W. and Goethals, P. (2021). Scientific methods to understand fish population dynamics and support sustainable fisheries management. Water. 13: 574-594. https://doi.org/10.3390/w13040574.
6. Idodo Umeh G. (2003): Freshwater fishes of Nig. (Taxonomy,EcologicalNotes,DietandUtilization),Idodo Umeh publishers Ltd. Benin-city Nigeria, 232 pp.
7. Layman, D. K., Evans, E., Baum, J. I, Seyler J, Erickson, D. J.and Boileau, R. A. (2005). Dietary protein and exercise have additive effects on body composition during weight loss in adult women; The Journal of Nutrition.135(8):1903-1910. DOI:135/8/1903.
8. Ofune J.A. (1979): Modern Regional Geography. Idodo Umeh publishers Ltd. Benin-city, Nigeria.
9. Otobo F.O. (1977): The commercial fishery in the Middle River Niger, Nigeria F.A.O Rome Fifa/77/symp. 17.23pp.
10. [10] Pauly, D. (1983). Some simple methods for the assessment of tropical fish stocks. FAO. Fisheries Technical Paper 234, FAO, Rome. 52pp.
11. Pinheiro M. A. A., Fiscarelli, A. G. and Hattori, G. Y. (2005). Growth of the mangrove crab Ucides cordatus (Brachyura, Ocypodidae). Journal of Crustacean Biology; 25:293–301. https://doi.org/10.1651/C-2438.
12. Torres S., Jonathan, B., Clayton, J. L., Danzeisen, T. W., Hu, H. and Dan Knights (2010). Journal of Diverse bacterial communities exist on canine skin and are impacted by cohabitation and time., 11. DOI 10.7717/peerj.3075.