Initial fish weight (g fish1) 15.5 14.9 16.6 16.3 2.0
Final fish weight (g fish1) 61.7 58.4 59.6 58.8 4.9
Weight gain (g fish1) 46.1 43.5 42.9 42.5 3.4
Specific growth rateb 1.97 1.96 1.85 1.84 0.1
Feed intake (g tank1) 1422 1467 1411 1376 33.4
Food conversion ratioc 1.56 1.70 1.64 1.65 0.12
Survival (%) 100 97 100 100 100
a Pooled standard error of mean.
b Specific growth rate, SGR = (ln initial weightln final weight)/t.
c Food conversion ratio, FCR = g dry food fed/g wet weight gain.
d No significant differences observed at P < 0.05