Effects of food and rearing density of hybrid grouper (♂ \(\textit{E. lanceolatus}\) x ♀ \(\textit{E. fuscoguttatus}\)) from fry stage to fingerling

The study on the effects of food and rearing density hybrid grouper (♂ E. lanceolatus × ♀ fuscoguttatus) from fry stage to fingerling was conducted at Nha Trang Mariculture Research Development Center (Research Institute for Aquaculture No. 3) March May 2018 assess live fish survival rate, growth in length, level coefficient CVL deformative rate. showed that feeding rotifers were better than oyster larvae food, or combination when used as fingerlings with rate 5.4 ± 0.3%, specific 7,90 0,05% body length/day ratio 0.9 0.3% (p < 0.05). Meanwhile, 8 fish/L 12 water recorded be 16