Once setlled, they eat just about anything. Be sure to offer it regular feedings of greens (nori, spirulina, etc.) A variety of meaty foods; mysis, chopped clam, mussel, plankton, bloodworms, Marine Cuisine, Emerald Entree', etc.. They also s[pend a lot of time scouring the rocks for algal film, and get some nourishment from this.