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SCANNING ELECTRON MICROSCOPIC STUDY OF MUCUS CELL OPENING IN THE ALIMENTARY CANAL OF HETEROPNEUSTES FOSSILIS ( BLOCH )

Heteropneustes fossilis is an air breathing fish inhabiting unique ecological niche the wetlands, where oxygen content is low. This fish is an omnivore, its alimentary canal is of moderate size, and the aim of the present study was to investigate the mucosal adaptation of the gut with special reference to the mucus cell opening in the different region of the gut mucosa. In present work the detail ultrastructure of goblet cell were identified in the mucosal folds of the gut epithelium of Heteropneustes fossilis.