Research was undertaken to determine the trace element concentrations in foodstuff and check pollution. The Samples under investigation represent different types of fish muscle tissue. They were collected from fresh water and seawater for a period of two years. The present work is carried out using Atomic Absorption Spectrometer, two digestive methods were investigated for sample dissolution, dry ash and wet ash method. The determined elements were Cd, Cu, Fe, Mn, Ni, Pb and Zn. The analytical as well as standard addition curves were used to determine the elements concentration in different samples.