Abstract
Concentrations of copper, iron, lead and zinc in edible muscle of ten fish species caught in three freshwater lakes of Pakistan were estimated by the atomic absorption method. The data indicated a high degree of species‐specificity in terms of metal accumulation in the muscle of various fish. Iron was found to have maximum concentration (14.940 μg/g) in Channa aruleus from Rawal lake, while in other species the metal was found at 5.390 and 4.480 μg/g. Copper levels ranged from 0.511 to 0.574 μg/g. The lead and copper levels in fish from Tarbela lake were lower than those for Rawal lake fish. Other metals showed divergent metal distribution. Simple and multiple metal correlation study showed correlation between iron and zinc in Labeo rohita and Channa aruleus. A strong dependence of the two metals was also observed for Mystus seenghala and Tor pitutora. The observed intermetallic relationships were, however, critically species‐specific and environment dependent.
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