Published Paper Details:

The present study was investigates fungal infection effects on the gills of the freshwater fish, Channa striatus. The following prolonged exposures of polluted water and native fishes stress. The gills of Channa striatus face the direct contact stress of decomposed materials. The blood capillaries (BLCs) of the secondary lamellae (SL) of gills showed extensive congestion followed by wear and tear. The ladder like arrangement of blood capillaries and pillar cells (BLCs-PLCs) gets dismantled and haemorrhages regularly take place in the gills. The staining property and density of the mucous cells (MCs) showed extensive periodic alterations. The fungi causes hyperplasia followed by their degeneration frequently noticed. The gills continued to show hyperplasia. The density and staining properties of the MCs continued. Present study was aimed to assess the histochemical analysis of mucosubstances was carried out in the epithelial cells and mucous cells in the gills of control fish and infected fishes exposed to fungal concentration on the basis of histochemical staining reactivities. The histochemical staining reactivities revealed fluctuations in mucosubstances in epithelial cells while neutral mucosubstances, was increased in mucous cells in gills of fishes. From these observations it is concluded that the fungal infection and impurities of the water toxic to fish and brings significant physiological alterations.