Metal Accumulation in Some Tissues/Organs of a Fresh Water Fish (Clarias Gariepinus) from Some Polluted Zones of River Kaduna

Heavy metal accumulation in the liver, gills, muscles, bone and whole fish of Clarias gariepinus collected from some industrially polluted zones (stations) of river Kaduna was investigated. The highest concentration of metals was recorded in the gills and liver. Iron, Zinc and Manganese were generally high in all the organs and tissues and also in the stations. Cadmium was absent in all the organs/tissues in stations 3 & control while chromium was absent in all the organs/tissues except the muscle and liver in stations 1 & 2 and bones in station 3 Key words: Heavy metals, Fish organs/tissues, River Kaduna