We usually pull the discus fry from the pairs after 10 - 14 days. It's important to feed the discus fry at least 4 to 5 times a day. Don't over feed. Feed small amounts of food, around every 5 hours, while they are less than an inch in size. Also keep the aquarium very clean. Siphon out any excess food in the aquarium that is not eaten after 15 minutes. Good food and clean water is essential to get your discus fry to grow like healthy weeds.