Effect of Toxicity and Bioaccumulation of Heavy Metals on Channa punctatus fish

The persistent bioaccumulation and magnifying properties of heavy metals make them environmental hazard. Many human activities also due to natural sources heavy metals are continuously released it the environment and keep polluting the environment such as volcanic eruptions and weathering of metal rich rocks while anthopogenic sources include agriculture and industrial activities fossils fuels and gasoline, waste incineration mining etc. In aquatic ecosystem chemical properties of these heavy metals change due to their toxicity which is dangerous and harmful to living being. These heavy metals enters the boby through gills body tissues and digestive system during ingestion of food particles in aquatic animals. Cadmium, Nickel, Chromium, Copper, Mercury, Lead and Zinc are the most dangerous heavy metals pollutants that generally causes harm to the body. This causes stress and stress weakens the immune system causes damage to various organs of the body and stunts growth.