females coupled with hand stripping and in vitro fertilization. The success of common carp pituitary extract
(CPE), luteinizing hormone releasing hormone analog (LHRHa) injections and LHRHa implants for producing
hybrid catfish fry was investigated over the past 15 years. Data from 65 studies, 25, 20 and 20 for CPE, LHRHa injections, and LHRHa implants, respectively, were evaluated. Mean fry/kg female body weight (all females) produced was 948, 2483 and 2765 for CPE, LHRHa injections, and LHRHa implants, respectively. LHRHa administered as an injection or implant produced more (Pb0.001)fry/kg than CPE. LHRHa implants and CPE (CV=37.5) gave a more consistent result (CV=35.9) than LHRHA injections (CV=49.9). LHRHa is advantageous for ovulating channel catfish for producing hybrid catfish fry compared to CPE. This advantage is even more important if brood fish, space or time are limiting