1983; McGinty and Alston 1987; Mires
1987; Hulata et al. 1990; Garcia-Perkz et al.
2000; Tidwell et al. 2000), important aspects
such as stocking density, carrying capacity,
and profitability of these systems
still need to be clarified. Moreover, specific
research concerning polyculture of 0. niloticus
and M. rosenbergii are even more
scarce.