I got him to help with an aipatsia problem i "inherited" from the used set up i bought, but i dont notice him eating any of the mature aiptasia. He is picking off the live rock, but he rarely eats any of the plankton/brine shrimp/blood worms that the damsel and clown devour. I have put red seaweed and dark green lettuce in as well but he doesnt seem to take these either. Is he sustaining himself off the live rock? i really dont want to starve him, but he seems otherwise healthy and active....