I have an Orange-Shoulder in my 75. He's getting ready to be put in a 150 because he sure is getting huge. He loves to swim and eat and I have never ever had a near aggression problem with him. Some books/people say that they're territorial nightmare and this is my second one and still not even a hint of being overly aggressive. In my opinion, a highly overlooked fish for eats beauty, hardiness, and temperment...and a great price too! This pic was taken awhile ago but here it is. When I first got him about 2 years ago, he was completely yellow.