Histopathological effect of heavy metals and electroplating industry wastewater on Tilapia (Oreochromis mossambicus)

This study highlights the histopathological profile of gill of Oreochromis mossambicus exposed to electroplating industry wastewater and its individual components, chromium and nickel. The need for this task arises due to releasing of the non-recycled wastewater into the environment, that may pose a problem to the aquatic organisms and finally to humans. The bioassays conducted have shown that the fish is more sensitive to industrial waste water than to its individual metal components, chromium and nickel. Also, more damage is caused in the gill tissue of fish in the highest concentration of wastewater compared to that of its individual component, chromium or nickel. This confirms the synergism of heavy metals on the vital organ of the fish.