I am currently in the process of starting a 55 gallon planted. I am going to have a variety of tetra schools, a school of yoyo loaches as well as some plecos and goramis. What I am looking for is a big (6-8") colorful cichlid that I can have as a sort of "center piece" fish. The problem is I can think of very few colorful cichlids that would be non aggressive twords my tetras and smaller fish. I have considered maybe a severum or a jack dempsey. Does anyone have any suggestions?