Histopathological study of black molly Poecilia latipinna exposed to Diazinon

Black molly fishes exposed to (0.006, 0.012, 0.018 mg/l) concentrations of diazinon for 45 days. Liver, kidney and gills were examined for histopathological study after exposed periods. Swelling of hepatocytes, necrosis, arteriosclerosis, hyalinization, and Cirrhosis were observed in the liver tissue. Tissue in kidney suffered from degeneration and vaculation, hyperplasia in tubules, hyalinization of haemopoietic tissue, lifting of epithelial tissues, and atrophy of collecting tubules. Hypertrophy and hyperplasia of epithelial cells, fusion of secondary lamellae and oedema were found in exposed gills.