The Role of GnRH Receptors in Regulating Fish Reproduction: Evidence from Heteropneustes fossilis
The hypothalamic-pituitary-gonadal (HPG) axis orchestrates reproductive function in vertebrates, with gonadotropin-releasing hormone (GnRH) and its receptor (GnRH-R) serving as key regulators in this endocrine cascade. In teleost fishes, including economically and ecologically significant species such as Heteropneustes fossilis (Singhi), the GnRH-GnRH-R system plays a vital role in initiating and maintaining reproductive processes. This review presents a comprehensive analysis of current research on the structure, expression, and function of GnRH receptors in H.