Embryonic and larval development stages of Oreochromis niloticus eggs during its artificial incubation were conducted in transparent water filter incubation jar at 29±0.11°C. Embryo developments were monitored and captured for defining characteristics from just fertilized egg to post yolk sac fry under digital microscope at 45× magnification. A bright yellow ellipsoidal egg describes a just fertilized egg was observed on the 1st day. Development of a rod-like structure was noticed at the dorsal part of developing embryo on the 3rd day. Hatching of the embryo occur on the 5th day while on the 12^th day a well-developed swim-up fry with functional mouth, eye, and fins emerged. This research would be valuable to tilapia stakeholders interested in genetic manipulation techniques for improve Oreochromis niloticus production.