fish were fed twice/day to satiation at 9:00 and 16:00 h. Total fish
weight in each hapa was determined every 4 weeks and any dead
fish were removed, recorded and weighed. After daily feedings, the
remaining feed from a pre-weighed ration was weighed to determine
feed intake (FI). Water temperature, measured daily, ranged
from 29.5–30.5 ◦C. pH and dissolved oxygen, measured weekly, varied
from 5.2–5.5 and 6.0–7.4 ppm, respectively.