Discus fry feed on a specialized, nutrient-rich skin mucus secreted by both parents for the first few weeks after hatching, a rare form of parental care. This behavior starts roughly 48 hours after they become free-swimming. While this mucus is essential for growth, excessive grazing can cause skin irritation or injuries to the parents, necessitating careful monitoring. #aquariumhobby #aquarium #fish | Hendrix Backyard