SRIVASTAVA ARTI, et al. “MELANOPHORE INDEX AS AN INDICATOR FOR JOINT HEAVY METALTOXICITY IN FRESH WATER FISH CHANNA PUNCTATUS”. International Journal of Pharma and Bio Sciences, vol. 7, no. 2, June 2016, pp. 95-103, https://ijpbs.net/index.php/journal/article/view/5037.