Two fish species of tilapia, Tilapia guineensis and Sarothorodon melanotheron were sampled from Lagos Lagoon and Agboyi Creek between December, 2008 and September, 2009 during the dry and wet seasons. They were analysed for organochlorines: aldrin, dieldrin, endrin, DDT, heptachlor, HCH, endosulfan, chlordane and methoychlor. The muscle tissues and organs of the fishes were subjected to cold…