Nanoluteus might be the most underrated cichlid. I have multiple breeding pairs in a 135 w/ tons of other fish: Black Neons, Endless, Platys, Cherry Barbs, Danios, etc. and there is not a single messed up fin. They protect their babies, but w/out hurting other fish. They are just awesome and look beautiful in their breeding dress. The mom is usually the looker, but this dad is looking great as well. 
