I got a 1 1/2 yr. old oscar from a guy at work and he is about 9 inches. he is in a 33 gallon tank and this week will be moved ointo a 100 gallon tank. But the problem is he won't he eat. Every couple of days he eill eat a few pellets but he has threee feeders in with him and he won't eat them. I also got an albino oscar from the same guy and he is fine. Can someone please help me.