Proliferation zones in the brain of adult fish Austrolebias (Cyprinodontiform: Rivulidae): a comparative study

▶We compared brain anatomy and proliferative zones in three species of Austrolebias. Phylogenetically closer species showed more anatomical similarities. ▶Continuity of proliferative zones along the brain rostro-caudal axis was demonstrated. ▶Analog structures bear different proliferative rate related to the sensory modalities. Fast neurogenesis was found in all of proliferative zones analyzed.