Moreover, this was also reflected in a significant effect of density on the total energy intake required to achieve a body mass increase from 190 to 200 g; where fish reared at 25 kg m−3 consumed 29.5% more energy than fish reared at 80 kg m−3 (p ≤ 0.05) and 40.8% more than fish reared at 140 kg m−3 (p ≤ 0.05).