Bioaccumulation of Zn, Cu and Cd in Channa punctatus.

Adult Channa punctatus were acutely exposed to LC50 of zinc, cadmium, Cadmium and copper separately for 96 hr and the degree of accumulation among the five tissues differed and it was in the order: gill>liver>kidney>blood>muscle in case of Zn, gills> Kidney> blood> liver>muscles in caseof Cd and gills-kidney-blood- Liver-Muscle in cases of Cu.