Journal of Marine Biology

The semi brackish Shourideh fish can be considered among the economically high-value fish species in the southern regions of the country. Its exceptional taste has rendered this species distinctive and premium. In the present study, ten specimens were captured from the Musa Creek. Subsequently, 5 mm thick tissue samples were collected from the anterior, middle, and posterior segments of the intestine. The tissue samples were processed using standard histological procedures, including fixation in formalin, dehydration through graded alcohols, clearing with xylene, paraffin embedding, sectioning with a microtome, mounting on glass slides, and staining with hematoxylin eosin. Finally, the prepared sections were examined under a light microscope. The number of mucous cells increased progressively from the anterior to the posterior intestine. Overall, the gastrointestinal tract of the studied fish exhibited a mucous-cell distribution pattern comparable to that reported in other species; however, morphometric differences were observed, which were evaluated and documented.