I got a TATF last week. He is about 4.5 inches and in good body condition. I am trying to switch him over to pellets. I have him in a 75g and using thin bar silver dollars as the training fish. How long can I comfortably starve a fish this size. It has been one week and he is definitely hungry but no interest yet. I was going to go to three weeks before picking up some feeders. Thought I would check with others experiences first.