I feed Lionhead sinking pellets and Oranda Gold floating pellets to my indoor goldfish 3 times a day. and my pond fish every few days. I keep them mixed 50/50 and I feed sparingly but I've had the best possible results. I just moved a Black Moor today from a 30 gallon at work to a 120 gallon Sarasa pond at home because he tripled in size in less than 6 months.
My Altums get Chiclid Bio-Gold and do extremely well. Too Well.