I can't figure out why he is not eating. Before I had him in a 20 gallon tank he was about 11 inches long and he would eat 4 to 5 medium (4 inches) shiners without out a problem. Now that he is in a 55 gallon tank I am getting a bigger one in December he only eats 2 if I am lucky. The bluegills eat more than him they eat about 10 small ones a peice.