The efficiency of different hormones including luteinizing hormone releasing hormone analog (LHRHa), common carp pituitary extract (CPE), catfish pituitary extract and human chorionic gonadotropin (HCG) have been investigated for induced spawning of channel catfish brood stock using varied concentrations of these hormones. Forexample, LHRHawas used to induce spawning of channel catfish held in aquaria by intraperitoneal or intracranial injection