HEAVY-METALS IN FISHES FROM COASTAL WATERS OF COCHIN, SOUTHWEST COASTOF INDIA

The concentration levels of copper, zinc, manganese and iron have been determined in marine fishes from Cochin area which is one of the majo r fishing zones along the west coast of India. The concentration of he avy metals varied from species to species. Copper, Zn, Fe and Mn showe d increased levels in the gills and alimentary canal compared to the m uscle. Difference in heavy metal concentration in various species stud ied is attributed to the varying feeding habits. The observed levels w ere below the toxic limit.