The authors would like to present the observations and results of a year and a half of experimental work with the all male Tilapia hybrid of male Tilapia hornorum and female Tilapia nilotica (Fig. 1). The research was performed at the Center for Fishculture Research located in Pentecosts, Ceara, Brazil. The research center is under the direction of the Departmento Nacional de Obras Contra as Secas (DNOCS).