Abstract: Interaction between growth and reproduction occurs in many vetebrates.The endocrine factors which regulate growth and metabolism are also affected on puberty and gonadal development.Similarly,the hormones which effect on reproduction are also influ enced on growth and metabolism.Recent studies on fish revealed the neuroendocrine interactions between the gonadotropic axis and the somatotropic axis.For example,gonadotropin-releasing hormone (GnRH) and dopamine could stimulate the release of growth hormone,sex steroid could modulate growth hormone secretion;also,growth hormone could accelerate gonadal development and maturation.Some new findings from studies on fish have not yet been obtained in mammals and other vertebrates are remains to be further investigated.