The amount of feed was adjusted for each hatchery phase in grams per million larvae/postlarvae like follow: mysis 1 = 45 g/million, mysis 2 and 3 = 55 g/million, postlarva 1 = 60 g/million, postlarva 2 = 65 g/million, postlarva 3 and 4 = 70 g/million, postlarva 5 = 75 g/million.