I got the fish about 2 weeks and change ago. He is 7" and the biggest fish in my tank. I feed the tank every other day with a good amount of food and remove whatever is left. Since i got him he has eaten once. The one time he ate was when i put in a 6" pond goldfish, and still he only took a few bites after the fish was practically dead. He NEVER eats when i do my normal feeding of beefheart, squid, smelt, shrimp etc.., he doesnt even seem to show interest in the food. Whats the deal? He seems perfectly healthy in every manner, he even chaces around the other fish very frequently. What could be the problem? Should i be worried? Thanks for any help.