The common dolphinfish (Coryphaena hippurus) holds global significance, but its fishery has faced a decline in size and yield due to overfishing. This study aims to establish early-stage development and seedling cultivation techniques, providing a foundation for enhancing fishery resources and supporting industrial seedling production. The fertilized eggs of the common dolphinfish are buoyant and semi-transparent, with an average diameter of 1.55 ± 0.04 mm, containing a single oil globule with an average diameter of 0.31 ± 0.02 mm. Hatching occurs around 48 hours and 20 minutes after fertilization at a water temperature of 26 ± 1°C and a salinity of 32 psu. The median length of the newly-hatched larvae is 5.07 ± 0.05 mm. On the 3rd day post-hatching (DPH), their length increases to 5.46 ± 0.12 mm begin feeding on small rotifers, specifically Brachionus plicatilis. On the 6th DPH, the larvae reach an average total length of 5.81 ± 0.62 mm, showing increased mobility, and copepod nauplii can be introduced. By the 10th DPH, the larvae achieve an average length of 6.63 ± 0.60 mm, with enhanced feeding capabilities, allowing for mixed feeding of copepod adults. It's essential to ensure overlapping use of various feeds. On the 30th DPH, the juvenile fish have an average total length of 33.00 ± 2.44 mm and can fully accept artificial formulated feed. The pattern of bands and colors of the juveniles on the 45th DPH (50.70 ± 5.02 mm) is consistent with that of the adults.