Epinephelus coioides (♀)×)] during the larval and juvenile stages. We measured the total length, pre-anal length, trunk height, head length, eye diameter, mouth width, the second dorsal fin spine, pelvic fin spine, pectoral fin, anal fin, and tail fin of Qinglong grouper (from hatch to 28 d) and captured images of each individual using Q-Capture Pro 6. The average total length of newly hatched larvae was (1.62±0.26) mm. After 28 d, the total length of juveniles was (16.58±1.09) mm at a water temperature of (30±1) and a salinity of 28±1. The growth in total length of Qinglong grouper was divided into three stages. The growth rate during the first, second, and third stages was 0.11 mm/d (from hatch to 7 d), 0.37 mm/d (from 8 to 21 d), and 1.51 mm/d(22 d afterwards), respectively. There was a significant difference in the growth rate between larval and juvenile stages (<0.05). Some of the organs exhibited allometric growth in early ontogeny. Head length and trunk height were positively allometric up to the inflexion point, then switched to isometric and negatively allometric, respectively. Pre-anal length was characterized by isometric growth and had no inflexion point during the larval and juvenile stages. The growth in the head (inflexion point at 21–22 d) and sensory organs (inflexion point at 20–21 d) was positive up to the inflexion point, then became negatively allometric, respectively. The second dorsal fin spine and pelvic fin spine exhibited strong positive allometry at first, before becoming negatively allometric. The inflexion point of the second dorsal fin spine was between 20 and 21 d, whereas that of the pelvic fin spine was at 17 d. The second dorsal fin spine and pelvic fin spine reached a maximum at 24 d. From hatch to day 26, pectoral and tail fin growth was positively allometric, and their inflexion points were between 14 and 15 d, and 22 and 23 d, respectively. Anal fin growth was positively allometric and had no inflexion point. This pattern of growth results in rapid improvement in swimming ability, thereby allowing individuals to search for food and escape predators. Our results suggest that the organs involved in feeding, sensing, and swimming developed most rapidly during the early developmental stages in Qinglong grouper. To increase the survival rate of Qinglong grouper during early life stages, it is critical to provide environmental conditions that account for the priority order of organ development.