Cherfas, N.B., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, Dor, D.N. Hof Hacarmel, 30820, Israel
Gomelsky, B., Department of Fisheries, Min. of Agric. and Rural Development, Fish and Aquacult. Research Station, Dor, D.N. Hof Hacarmel, 30820, Israel
Ben-Dom, N., Department of Aquaculture, Institute of Animal Science, Agricultural Research Organization, Dor, D.N. Hof Hacarmel, 30820, Israel
Joseph, D., Department of Fisheries, Min. of Agric. and Rural Development, Fish and Aquacult. Research Station, Dor, D.N. Hof Hacarmel, 30820, Israel
Cohen, S., Department of Fisheries, Min. of Agric. and Rural Development, Fish and Aquacult. Research Station, Dor, D.N. Hof Hacarmel, 30820, Israel
Israel, I., Department of Fisheries, Min. of Agric. and Rural Development, Fish and Aquacult. Research Station, Dor, D.N. Hof Hacarmel, 30820, Israel
Kabessa, M., Department of Fisheries, Min. of Agric. and Rural Development, Fish and Aquacult. Research Station, Dor, D.N. Hof Hacarmel, 30820, Israel
Zohar, G., Department of Fisheries, Min. of Agric. and Rural Development, Fish and Aquacult. Research Station, Dor, D.N. Hof Hacarmel, 30820, Israel
Peretz, Y., Aquaculture Division, Extension Services, Min. of Agric. and Rural Development, Dor, D.N. Hof Hacarmel, 30820, Israel
Mires, D., Department of Fisheries, Min. of Agric. and Rural Development, Hakirya, Tel Aviv, Israel
Hulata, G., Department of Aquaculture, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel

All-female common carp (Cyprinus carpio L.) progenies, obtained from breeding regular females and inverted (XX) males, were compared with bisexual progenies, obtained from breeding the same females and regular (XY) males. The evaluation was carried out in two pond experiments in which the fish were grown to marketable body weight (about 1 kg). In the first experiment (spring spawning), the all-female progeny grew better than the control and produced a higher yield. In the second experiment (late summer spawning), the all-female progeny again grew better, but at a lower effective fish density due to higher mortality. The results confirm the possibility of producing all-female common carp progenies on a large scale by crossing regular females with inverted males and using standard technology for the artificial propagation of the fish.