Historically, the development of tilapia fish farming began after a decline in environmental quality and an attack by shrimp farming disease, resulting in most of the pond land on the North Coast of Java becoming abandoned or idle. The euryhaline character of tilapia is an alternative for utilizing former shrimp ponds. This activity aims to hatch tilapia fish on the North Coast of Java. The parent tilapia fish used is the Sultana strain. The spawning ratio of male and female tilapia is 1:3, with a feeding percentage of 1% of the biomass. The parents will spawn after the 10th day since the parents were mixed into the spawning pond. The larvae are completely harvested on the 13th or 15th day, from the time the parents are spawned/mixed. The resulting larvae are then reared until the seed size is 5-8 cm/ind with a stocking density of 50-75 larvae/m2. The percentage of parent tilapia fish that spawn ranges from 25.31% - 45.50% and the survival rate of tilapia fry ranges from 73.21% - 88.56%.