With tilapia rapidly gaining popularity as a worldwide aquaculture commodity, demand by producers for monosex male tilapia has also increased. In most culture systems, monosex male tilapia produce greater harvested yields than mixed-sex populations. Furthermore, in mixed-sex populations, there is usually a size differential between the sexes at harvest, with males up to 50% larger, depending on the system.
Mair, G.C. Monosex tilapia: factors, effects, and methods for male-only production. Global Aquaculture Advocate (2001) 4 (4) 79-81.