 Fertile lemon tetra eggs take approximately 72 hours to hatch at 28 °C.The fry spend a further 24 to 48 hours absorbing the yolk sac, whereupon they become free-swimming.At this stage, the fry should be fed with infusoria or a special egglayer fry food, and frequent partial water changes (around 10% of the aquarium volume every 24 to 48 hours) initiated.