The thyroid gland of Mystus vittatus was unencapsulated, composed of follicles scattered mainly around the ventral aorta in the sub pharyngeal region. Each follicle provided with agranular eosinophilic colloid materials in the central lumen was encircled by a single layer of epithelial cells. The follicular cells varied according to the secretary activity in harmony with the reproductive cycle....

Different cell types were identified in the pituitary gland of Mystus vittatus on the basis of their characteristic arrangement, distribution and tinctorial properties. The adenohypophysis was subdivided into three distinct zones innervated by the process of neurohypophysis. The acidophilic prolactin (PRL) cells and adrenocorticotropic cells were observed in the rostral pars distalis (RPD). The...

mystus gulio is a euryhaline fish, occurring mostly in freshwater; it has also been found to thrive in backwaters of low salinity. it is a popular food fish due to its good taste and recently it has also been reported to be exported as indigenous ornamental fish from india. number of workers earlier has studied morphology, age, growth pattern, food and feeding habit and reproductive biology of ...