Histological Alterations in the Liver of Heteropneustes fossilis (Bloch, 1794) Exposed to Polystyrene Nanoparticles

Plastic pollution has been a serious environmental threat through its increasing application in every field whether it is household or industry. Plenty of plastic in aquatic debris ends up in aquatic environments where it degrades and fragments are nanosized through various ways. These nanoparticles can travel to almost all locations within the organisms via endogenous transport to cause severe damage to them. Among nanoplastics, polystyrene is creating more health hazards in aquatic organisms. Fishes are the best indicator of aquatic pollution as they get exposed to these toxicants by the unscrupulous use of plastic due to its easy applications in personal and public life. In the present study, Heteropneustes fossilis was exposed to various concentrations of polystyrene nanoparticles for 20 days to investigate the histological alterations in the liver under a Scanning Electron Microscope.