I feed mine frozen Krill, Whole Shrimp , and silversides on occasion. Mine will also eat flakes and pellets if they can get to them fast enough before the fish eat them up. They like Rods food also..the herbivore blend and the regular...Their pigs, they will keep on eating as long as you feed them... I normally feed mine every 2-3 days sometimes more depending on my work schedule.. There metabolism is slow so they dont really need daily feedings or bi-daily for that matter, even though Im sure they woud eat if I offered it to them...Mine eat off of a feeding stick or in my case I just use my long plastic forceps so I can hold onto the food good....