I have a 180 gallon w/ a 4" copperband, 3" yellow longnose, maroon clown pair, 3" flame and bicolor angel, and hippo tang that's half full with rock. I bought a tank raised 1.5" little neon dottyback. I could keep it in my 35 gallon cube but figured I had enough space and large enough and bold enough fish it shouldn't be a problem. Has anyone had trouble with adults becoming too aggressive even with larger fish?