I have a huge Sebae that's been in my tank for ~ 2 years. It's sitting high in my tank, so it gets a lot of Photo-feeding time. I assume it also benefits from the occasional Micro-Vert that I feed my corals. I've noticed my clowns will bring back a lot of food to feed it as well. So, I don't really feed it big pieces of fish, shrimp, etc. It's apparently worked out pretty well, because it's 4-5x it's original size and giong stron for 2+ years and counting.