When did you get your Green? Mine was picky first (caught in my neighbors pond at 8") but now eats everything and is very greedy eating pellets and raw shrimp. Mine was also very aggressive at first, had to introduce him to my 8" jack which let him know who was boss. Now he is fine, and strangely enough, my jack and him are friends even sharing his house, which is really weird since he is paired with a female jack that also shares the house.