and reproductive performance of a freshwater ornamental species, the swordtail
(Xiphophorus helleri). Two protein levels (20% and 30%) with four lipid levels (8%, 12%,
16%, 20%) within each protein levels were tested through formulation of practical diets
labelled as 20P8L, 20P12L, 20P16L, 20P20L, 30P8L, 30P12L, 30P16L and 30P20L
respectively. Results showed that dietary protein level significantly influenced final weight …