Determining Sexual Maturity of Broodstock for Induced Spawning of Fish
نویسنده
چکیده
The external appearance of brood fish has long been used to assess the stage of sexual development. In some species, males change in appearance during the spawning season (e.g., vivid breeding colors in cichlids, hooked jaw in salmon, and roughened texture of the pectoral fins or head of cyprinids). These physical changes make it relatively easy to identify sexually mature males. However, secondary female sex characteristics such as plumpness of the abdomen and redness of the vent are extremely subjective and can be misleading.
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