Gonadal sex differentiation in Atlantic halibut

Abstract

The process of gonadal sex differentiation in 338 Atlantic halibut Hippoglossus hippoglossus larvae, ranging in size from 10 mm L s to 230 mm L F , is described histologically. Gonadal sex differentiation occurred by 38.0 mm L F , which coincided with the weaned, post‐metamorphic, settled stage in the life cycle. This was a gradual process that coincided with other organogenesis in the developing larvae.