The acute industrial effluent toxicity to fresh water fish.

There was a direct relationship between the concentration of industrial effluent and the chloride, ammoniacal nitrogen and carbon dioxide content of water, but no correlation with pH and dissolved oxygen. The effect of various concentrations (5, 10, 15 and 20 ppm) of electroplating waste on liver, muscle, brain and kidney glycogen and on serum glucose and lactate was studied in nine fish species. Glycogenolysis was higher in major carps than in cat fish or murrels. The lowest level of glycogen was recorded in muscle, followed by liver, kidney and brain. There was an inverse relationship between the concentration of waste and the decrease in liver and muscle glycogen. There was a direct relationship between the concentration of waste and levels of serum glucose and lactate, which were higher in major carps than snake headed or cat fish.