Abstract: Temperature is one of the important water quality parameters in influencing the condition of larvae in the initial development phase. This study discusses how to compare the temperature in the larvae of seabass (Lates calcarifer) against the rate of yolk sac absorption. From observing the development of seabass larvae at different temperatures, it is known that the temperature of 24°C, 28°C, 32°C, and 36°C affect the time of absorption of yolk with the time of absorption 45, 51, 36 and 30 hours respectively. From the results of the analysis of variance in the absorption rate of egg yolks, there was a significant difference between each treatment in the early stages of developing seabass larvae (Lates calcarifer)