A. F. Mazon, C. C. C. Cerqueira, E. A. S. Monteiro, and M. N. Fernandes, Acute copper exposure in freshwater fish: Morphological and physiological effect. In VAL, AL. and ALMEIDA-VAL, VMF. Biology of Tropical Fishes. Manaus: INPA, 1999.
 V. Poleksic and V. Mitrovic-Tutundzic, Fish gills as a monitor of sublethal and chronic effects of pollution. In: Müller, R. and Lloyd, R., Eds. Sublethal and chronic effects of pollutants on freshwater fish. Cambridge: Cambridge University Press, 1994.
 B. Raskovic, V. Poleksic, I. Zivic, and M. Spasic, "Histology of carp (Cyprinus carpio, l.) gills and pond water quality in semiintensive production," Bulgarian Journal of Agricultural Science, vol. 16, pp. 253-262, 2010.
 P. Popov, N. Androsova, and G. Anoshin, "Accumulation and distribution of heavy and transition metals in fishes of the Novosibirsk Water Reservoir," Journal of Ichthyology/Voprosy Ikhtiologii, vol. 42, pp. 264-270, 2002.
 I. Golovanova, "Effects of heavy metals on the physiological and biochemical status of fishes and aquatic invertebrates," Inland Water Biology, vol. 1, pp. 93-101, 2008.Available at: https://doi.org/10.1007/s12212-008-1014-1.
 S. C. H. Mary, D. Bhuvaneswari, and R. Anandan, "Biochemical and histopathological studies on lead nitrate induced toxicity in fresh water fish grass carp (Ctenopharyngodon Idella)," European Journal of Experimental Biology, vol. 5, pp. 24-30, 2015.
 G. Adami, P. Barbieri, M. Fabiani, S. Piselli, S. Predonzani, and E. Reisenhofer, "Levels of cadmium and zinc in hepatopancreas of reared Mytilus galloprovincialis from the Gulf of Trieste (Italy)," Chemosphere, vol. 48, pp. 671-677, 2002.Available at: https://doi.org/10.1016/s0045-6535(02)00196-0.
 A. Sehar, A. Shafaqat, S. A. Uzma, F. Mujahid, A. B. Saima, H. Fakhir, and A. Rehan, "Effect of different heavy metal pollution on fish," Research Journal of Chemical and Environmental Sciences, vol. 21, pp. 74-79, 2014.
 M. Drishya, B. Kumari, K. Mohan, A. Ambikadevi, and B. Aswin, "Histopathological changes in the gills of fresh water fish, Catla catla exposed to electroplating effluent," International Journal of Fisheries and Aquatic, vol. 4, pp. 13-16, 2016.
 K. Thayappan, D. Maghil, A. Remy, and S. Narayanasamy, "Histological study of the intestine and liver tissues in the fish Oreochromis mossambicus exposed to cypermethrin," Journal of Modern Biotechnology, vol. 3, pp. 48-54, 2014.
 D. E. Hinton and D. J. Lauren, Liver structural alterations accompanying chronic toxicity in fishes: Potential biomarkers of exposure. In: Biomarkers of Environmental Contaminations (Edited by J.F. McCarthy and L.R. Shugart). Boca Raton, FL: Lewis Publisher, 1990.
 D. Yildiz, I. Kula, G. Ay, S. Baslar, and Y. Dogan, "Determination of trace elements in the plants of Mt. Bozdag, Izmir, Turkey," Archives of Biological Sciences, vol. 62, pp. 731-738, 2010.Available at: https://doi.org/10.2298/abs1003731y.
 O. Lawal and O. Komolafe, "Concentrations of heavy metals in three tilapine species of an abandoned gold Mine reservoir in Igun, Nigeria," Nigerian Journal of Fisheries, vol. 9, pp. 581-585, 2012.
 I. Olabanji and E. Oluyemi, "Preliminary assessment of heavy metal pollution of Opa reservoir, Ile-Ife, southwest Nigeria using Mormyrus rume and Tilapia zillii," Ife Journal of Science, vol. 16, pp. 35-43, 2014.
 D. Bernet, H. Schmidt, W. Meier, P. Burkhardt‐Holm, and T. Wahli, "Histopathology in fish: Proposal for a protocol to assess aquatic pollution," Journal of Fish Diseases, vol. 22, pp. 25-34, 1999.Available at: https://doi.org/10.1046/j.1365-2761.1999.00134.x.
 J. D. Simonato, C. L. Guedes, and C. B. Martinez, "Biochemical, physiological, and histological changes in the neotropical fish Prochilodus lineatus exposed to diesel oil," Ecotoxicology and Environmental Safety, vol. 69, pp. 112-120, 2008.Available at: https://doi.org/10.1016/j.ecoenv.2007.01.012.
 D. Yogita and A. Mishra, "Histopathological alterations in gill and liver anatomy of freshwater, air breathing fish channa punctatus after pesticide hilban (Chlorpyrifos) treatment," Advanced Bioresearch, vol. 4, pp. 57-62, 2013.
 D. Au, "The application of histo-cytopathological biomarkers in marine pollution monitoring: A review," Marine Pollution Bulletin, vol. 48, pp. 817-834, 2004.Available at: https://doi.org/10.1016/j.marpolbul.2004.02.032.
 M. Ramesh and K. Nagarajan, "Histopathological changes in the muscle tissue of the fish clarias batrachus exposed to Untreated and Treated Sago Effluent," Advances in Bioscience and Bioengineering, vol. 1, pp. 74-80, 2013.
 A. Naeemi, S. Jamili, N. Shabanipour, A. Mashinchian, and S. Shariati Feizabadi, "Histopathological changes of gill, liver and kidney in Caspian kutum exposed to Linear Alkylbenzene Sulfonate," Iranian Journal of Fisheries Sciences, vol. 12, pp. 887-897, 2013.
 S. Saenphet, W. Thaworn, and K. Saenphet, "Histopathological alterations of the gills, liver and kidneys in Anabas testudineus (Bloch) fish living in an unused lignite mine, li district, Lamphun province, Thailand," Southeast Asian Journal of Tropical Medicine and Public Health, vol. 40, pp. 1121-1126, 2009.
 M. Osman, S. El-Fiky, Y. Soheir, and A. Abeer, "Impact of water pollution on histopathological and electrophoretic characters of Oreochromis niloticus fish," Research Journal of Environmental Toxicology, vol. 3, pp. 9-23, 2009.Available at: https://doi.org/10.3923/rjet.2009.9.23.