I recently bought a Juvenile Emperor Angelfish and he was the most beautiful thing ever. I put him in a 75 gallon since he was only about 2 inches and I'm going to upgrade in the next year. last night he was eating like normal and I saw him this morning before I left for school but now I cant find him anywhere. I just want to ask if this is normal since this is my first time dealing with an emperor and I didn't know if the juveniles hide sometimes or not.