Today I brought home a rainbow shark (Epalzeorhynchos frenatum). He's in a 20 gallon tank with 2 cory cats, 4 platys, 1 dalmation molly, 2 guppies, and 1 tetra. He's doing great and has established his territory in a cave we provided. I need advice on what and when to feed him. The rest of my fish eat tropical fish flakes, and I have sinking shrimp pellets along with freeze dried shrimp for treats. Is there a certain time or amount my rainbow shark should be eating? He hid in his cave when I fed the rest of my fish today, and he didn't seem to come out to eat. He's about 2.5 inches long. Thanks for any advice!