Abstract

James Robert*

The topic of fish reproductive biology has grown quickly during the last five decades, owing to the wide diversity of species and physiologies as well as reproduction-related limitations in aquaculture. This review integrates basic and applied advancements and milestones to present my opinion on the subject over this time period. The failure of farmed fish to ovulate and spawn in captivity was overcome thanks to our basic understanding of the brain-pi- tuitary–gonadal axis, allowing us to conclude the fish life cycle and establish a regular, year-round egg production. The study of the molecular and hormonal systems involved in sex determination and differentiation led to the devel- opment of methods for developing higher-performing mono-sex and reproductively-sterile fish.