O.R. Galman,
J. Moreau, 
G. Hulata
R.R. Avtalion

Of the methods used for commercial-production of all-male tilapia populations in Israel, crossing Oreochromis niloticus females and O. aureus males produces most of the tilapia fingerlings cultured commercially. This technique needs continuous control of the parental breeding stocks. The appropriate methodology and electrophoretic genetic markers used for this control are described and discussed.