Gill lesions in the major carp, Labeo rohita exposed to lethal and sublethal concentrations of tannery effluent.

The major carp, Labeo rohita were exposed to (0.873%) lethal and sublethal (0.073%) concentrations of tannery effluent for 24h and 40 days respectively under static bioassay condition.

Toxic effects of copper and zinc mixtures on some haematological and biochemical parameters in common carp, Cyprinus carpio (Linn).

The effect of heavy metals and mixture were studied on some haematological and biochemical parameters in fish, Cyprinus carpio at sublethal level over the period of 30 days. Heavy metal significantly decreased total RBC count, haemogoblin, heamatocrit (Hct) (except copper after 10 days exposure). The WBC count was increased significantly in all the treated fish.