Metal concentrations in two commercial fish from Persian Gulf, in relation to body length and sex.

The relationship between sex, size (length and weight) and metal concentrations in the tissues of two commercially valuable fish species (silver pomfret, Pampus argenteus and tiger tooth croaker, Otolithes ruber) from Persian Gulf were evaluated. Concentrations of the metals in fish species ranged as follows: Mn 0.743-11.279; Cd 0.175-2.375; Pb 2.406-11.297; Zn 10.837-80.389; Fe 2.263-86.110; Cu 1.503-6.333 μg/g dry weight, respectively. Metal content in both fish varied with type of metals, organ, and sex. Results showed that, except in a few cases, significant relationships between metal concentrations and fish size were negative.