Bioaccumulation of heavy metals in fish collected from Ghailarh lake of Madhepura, Bihar

This study was carried out to investigate some physico-chemical parameters and Lead, Zinc, Copper, and Chromium bioaccumulation of fishes' muscle collected from Ghailarh lake of Madhepura, Bihar. This study will provide information on the human consumption safety of these fish samples from the lake. Surface water, and fish samples from fisherman landing site respectively were collected bi-monthly. Water temperature, pH, and Dissolved Oxygen were measured in situ, while other parameters were determined according to APHA standard methods. All the measured physico-chemical parameters are within the recommended permissible limit for aquaculture. Copper recorded the 0.52-1.69 μ g/g, Zinc 42.46-57.74 μ g/ g, Lead 0.68-1.6 μ g/g, Chromium 0.42-0.98 μ g/g in common carp, where as in Tilapia fish Copper recorded the 0.30-1.03 μ g/g, Zinc 24.11-48.59 μ g/g, Lead 0.48-1.016 μ g/g, Chromium 0.45-0.90 μ g/g. The mean concentrations of all the metals in the present study were lower than the permissible limits, thus the sampled fish from the lake are generally safe for human consumption.