Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection
Bárbara Correa Bianchini,
Patricia Postingel Quirino,
Marina de Oliveira Cristan
et al.
Abstract:Brycon orbignyanus exhibits seasonal reproduction where males can be distinguished from females by the roughness present in the anal fin of the specimens that represents a secondary sexual characteristic known as hooks. This study aimed to describe the appearance and morphology of hooks on the anal fin in B. orbignyanus and relate them to the phases of the reproductive cycle of these animals to determine a parameter that can be used for the selection of suitable males for use in induced reproduction. Monthly m… Show more
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