Initial and final weights (g ∙ fish−1), daily weight gain (DWG) (g ∙ day−1), survival rate (SR) (%), feed intake (FI) (mg ∙ fish−1 ∙ day−1), feed conversion ratio (FCR), protein efficiency ratio
(PER) (protein gain−1) and costs for producing 1 kg of feed ($/kg feed) and for producing 1 kg of fishweight gain ($/kg fish), both in US$, of Channa micropeltes fed the five experimental
diets in the phytase experiment (Expt 3).