“…The enumerated parameters were correlated with metal concentrations in the muscles and the livers of 20 barbus units (Barbus meridionalis Risso) 100-1720g in weight, 118-596mm in length and 0+ -4+ years of age, taken from two locations (Demir Kapija and Gevgelija) in the lower part of the Vardar River. It is evident from Table 1 that for none of the metals analysed a significant positive correlation was established with the units' age, weight and length, in other wordsthese results confirm the current attitude (Spry and Wiener, 1991, Dietz et al,1996, Carru et al, 1996 that it does not come to progressive accumulation of Zn, Mn, Fe, Cu, Cr, Pb, Sr and Al together with ageing or growing, or that there are efficient mechanisms of detoxification or of elimination of accumulated metals in fish organisms. These results are encouraging from a health-care, but also from an ecological point of view, for they prove that commercial and bio-manipulation catch of fish for nutrition does not imply any risk increase and that it meets alimentary standards.…”