In Thailand, a typical feed formulation for herbivorous fish may include fishmeal (16 percent), peanut meal (24 percent), soybean meal (14 percent), fish feed bran (30 percent), broken fish feed (15 percent) and vitamin/mineral premixes (1 percent) (Somsueb, 1994). Some examples of farm-made feed formulations for tilapia at various life stLIMAes under semi