So my 55 growout tank will be setup for my fish in the next week as my houses remodeling is being done tomar. The fish going in the 55 growout will be a loiselli cichlid, and a wolf fish. These 2 fish have been sharing a 20 gallon long for the past week and a half or so. The only aggression I have seen has come from the loiselli and not the wolf. The wolf is about 7 inches and the loiselli is about 6. The other fish that will soon join them in the 55 will be a jag whose only 3 inches and a clown knife who is about 6 inches. The fish I have in other tanks are a 2 1/2 inch jd and 2 silver gars(hujeta gars). These 3 fish i feel are the outcast in my stocklist. All fish will be moved into my 150 i just purchased from my uncle. I will be trading the 3 fish in tomar and was wondering what I could add with my other fish. I was thinking a flowerhorn, another jag, another gar type fish, or any other ideas you may have. I want something that can defend itself if needed.