Effects of initial bait casting time on growth and survival of Oxyeleotris marmorata larva

The effects of different initial bait casting time on growth and survival of artificial incubation Oxyeleotris marmorata larva was examined at 30 (±1)℃. The results indicated that, a small number of larvae began to open and feed after rupture in 2 days, the larva, within 3 days of age began to cast the bait, grew better than those in other groups. The initial feeding rate was 5.56%, the initial feeding rate of larva with 5 days of age was at the highest level, and the mixed nutrition period was for 3 days. The point of no return (PNR) of larva was shown on the time of 5.5-6 days after hatch and the daily mortality was the highest between 7 days and 8 days within all groups. The investigation demonstrated that the optimal initial bait casting time for O. marmorata larva was at 3 days of age.