The bioaccumulation factors (BAFs) of heavy metal (Fe, Zn, Pb, Cd, Cr, Cu, Mn, and As) concentrations in benthic and pelagic fish organs (muscles, gills, liver, and hearts), and concentrations of heavy metals in water and sediments of Ogbese River, Ondo State, Nigeria were investigated. From the results, the concentrations of heavy metals in the water were within the permissible limits stipulated by the World Health Organization (WHO). However, in the sediments, Cd, Cr, Fe, and Mn concentrations were higher than the limits, while Zn, As, Pb, and Cu were within limits. Heavy metals concentrations in the fish organs showed that all fish species were within the permissible limits implying no contamination. More so, the BAFs in all fish organs revealed no probability of accumulation while the geoaccumulation index and contamination factor showed no contamination to moderate contamination. The potential ecological risk index also showed moderate risk factor indicating that the water and sediments were not extremely polluted for higher organisms but may be toxic for lower ones. The study concludes that constant monitoring and study should be conducted by researchers and the Ministry of Water Resource and that the community should be aware of the danger human pollution can cause to the river.

底栖和中上鱼类器官（肌肉，腮，肝和心脏）中重金属（Fe，Zn，Pb，Cd，Cr，Cu，Mn和As）的生物累积因子（BAF）浓度以及重金属的浓度对尼日利亚翁多州奥格比斯河的水和沉积物中的水进行了调查。根据结果​​，水中的重金属浓度在世界卫生组织（WHO）规定的允许范围内。但是，沉积物中的Cd，Cr，Fe和Mn浓度高于极限，而Zn，As，Pb和Cu处于极限范围内。鱼器官中的重金属含量表明，所有鱼类均在允许的限度内，这表明没有污染。更是如此 在所有鱼类器官中，BAF均未显示出积累的可能性，而地积累指数和污染因子未显示出对中度污染的污染。潜在的生态风险指数也显示出中等风险因素，表明水和沉积物对高等生物没有严重污染，但对低等生物可能有毒。该研究的结论是，应该由研究人员和水利部进行持续的监测和研究，并且社区应该意识到人类污染可能对河流造成的危害。