I currently have 34 Ikola tropheus F1 about 1.25 inches. This is my third colony of tropheus (different tanks). I am having a custom built 180 gallon acrylic show tank built (72x24x24). I plan on putting the Ikola is the tank. I am also considering 15 or so demansoni in the 180 with the tropheus. Any thoughts on whether this would be a good mix. Diets are the same but demonsoni's can be pretty mean. However, this would be a great contrast in species.